Scott Mobley
11 years ago
2 changed files with 290 additions and 0 deletions
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function TurkeyLayer( name, layerNumber1, turkeyModel, ovenModel ){ |
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var that = this; |
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this.name = name; |
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this.layerNumber=layerNumber1; |
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this.waterLost = 0; |
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this.finalTemperature = 20; |
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this.cookCondition = "Raw"; |
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return { |
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updateTemperatureTick: function(){ |
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that.finalTemperature = turkeyModel.globTemp[that.layerNumber] |
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console.log(turkeyModel.globTemp) |
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that.waterLost = that.waterLost + UtilityFunctions.waterLoss( that.finalTemperature ); |
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that.cookCondition = UtilityFunctions.cookCondition(that.waterLost); |
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if(DEBUG) console.log( that.name + ": "+ that.waterLost + " " + that.cookCondition + " " + that.finalTemperature + " C" ); |
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}, |
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getCondition: function(){ |
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return that.cookCondition; |
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}, |
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getTemperature: function(){ |
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return that.finalTemperature; |
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} |
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} |
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} |
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function TurkeyModel( weight, ovenModel ){ |
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this.density = 700; // kg/m3 Assuming Density of Water 1000 kg/m3
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this.cp = 2810; // 2810 J/kg K for Turkey. Extra is to semi-account for water evaporation energy
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this.heatConvection = 9; // W/m2 K Some Reasonable estimate for natural Convection. Change as needed. 5-25
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this.thermalConduct = 0.412; // W/m K // Chicken
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this.skin = {}; |
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this.body = {}; |
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this.core = {}; |
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this.splitsNum = 20; |
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console.log(UtilityFunctions.lbs2kgs(weight)) |
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this.totalRadius = UtilityFunctions.calculateRadius( UtilityFunctions.lbs2kgs(weight), this.density ); |
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this.totalLayers = [ new TurkeyLayer("Skin", this.splitsNum-1, this, ovenModel ), |
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new TurkeyLayer("Body", this.splitsNum-4, this, ovenModel ), |
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new TurkeyLayer("Core", 0, this, ovenModel ) ]; |
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// Whenever temperature is changed
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this.updateLayerTemps = function() { |
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this.globTemp = UtilityFunctions.transientSphereSeries( this.density, |
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this.thermalConduct, |
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this.heatConvection, |
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this.cp, |
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this.totalRadius, |
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ovenModel.tempInfini, |
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this.splitsNum, |
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this.deltar, |
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this.globTemp, |
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this.pointRadius |
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); |
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for (var i in this.totalLayers ){ |
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this.totalLayers[i].updateTemperatureTick(); |
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} |
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}; |
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this.resetLayerTemps = function() { |
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for (var i in this.totalLayers ) { |
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this.totalLayers[i].resetLayerTemps(); |
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} |
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}; |
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//Sheen Model Stuff
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this.globTemp=[]; |
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this.pointRadius = [] |
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this.splitsNum = 20; |
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this.deltar = this.totalRadius/this.splitsNum; //20 Data Points
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this.initializePoints = function() { |
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var step = ( this.totalRadius - this.deltar ) / ( this.splitsNum - 1 ); |
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for (var i = 0; i<this.splitsNum ; i++ ) { |
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this.pointRadius.push(step*i+this.deltar); |
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this.globTemp.push(20+step*i); //Starts at 20 C for initilizating
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}
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}; |
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this.initializePoints() |
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} |
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function OvenModel( turkeyWeight, gameState ) { |
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var that = this; |
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this.tempInfini=20; //C
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this.setTemp = 20; |
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this.globalTime = 0; |
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var turkey = new TurkeyModel(turkeyWeight, this ); |
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var proportional = 0.004; // This value is arbitrary to how fast you want the temperatures to converge. (Or oscillate, which could be realistic as well)
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var errorTolerance = 10; //Stove is accurate to 1 degree Celcius Should hopefully oscillate below that value.
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// Equalize temp will need to be sent each time iteration
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this.equalizeTemp= function(){ |
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var error = Math.abs(this.setTemp-this.tempInfini); |
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if( this.setTemp>this.tempInfini ){ |
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this.tempInfini = this.tempInfini + error*proportional; |
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} |
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else if( this.setTemp<this.tempInfini ){ |
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this.tempInfini = this.tempInfini - error*proportional; |
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} |
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if( error>errorTolerance ) { |
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return(true); |
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} |
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} |
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return { |
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getTurkeyState: function(){ |
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return { |
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"skin" : { |
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"temp": turkey.totalLayers[0].getTemperature(), |
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"cond": turkey.totalLayers[0].getCondition() |
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}, |
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"body" : { |
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"temp": turkey.totalLayers[1].getTemperature(), |
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"cond": turkey.totalLayers[1].getCondition() |
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}, |
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"core" : { |
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"temp": turkey.totalLayers[2].getTemperature(), |
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"cond": turkey.totalLayers[2].getCondition() |
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} |
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}; |
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}, |
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changeTemp: function(setTemp){ |
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if(DEBUG) console.log("temp changed to " + setTemp); |
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that.setTemp = setTemp; |
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}, |
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// set the tempInfini
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setRawTemp: function(newTemp){ |
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if(DEBUG) console.log("raw temp changed to" + that.tempInfini); |
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that.tempInfini = newTemp; |
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}, |
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getRawTemp: function(){ |
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return that.tempInfini; |
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}, |
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getCookTime: function(){ |
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return that.globalTime; |
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}, |
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secondTick: function(){ |
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that.globalTime = that.globalTime + 1; |
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if ( that.equalizeTemp() ) { |
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// Turn on oven light
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gameState.pubsub.publish( "OvenLight", "On" ); |
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} |
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else { |
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// Turn off oven light
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gameState.pubsub.publish( "OvenLight", "Off" ); |
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} |
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if(DEBUG) console.log("Oven Temp " + that.tempInfini ) |
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turkey.updateLayerTemps(); |
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} |
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} |
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} |
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UtilityFunctions = { |
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// Cache the lambda if the Biot number does not change, to avoid expensive root-finding operations
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cachedBiot: null, |
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cachedLambda: null, |
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// Using Ratios for a rectangular Box Turkey
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calculateRadius: function(weight, density) { |
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var ratioLvG=1.4; //1.4, Turkey length vs shoulder girth
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var ratioLvH=2; //2, Turkey length vs height from resting position
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var length = Math.pow(weight/((1/ratioLvG)*(1/ratioLvH)*density),(1/3)) |
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var depth = 1/(ratioLvG /length); |
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var height = 1/(ratioLvH /length); |
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var simpleRadius = length/2; //Doesn't take into account equal Volume
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var rectangleVolume = depth*height*length; //m^3 Multiple by 1/4 to account for triangular shape and empty Space
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var complexRadius = Math.pow(rectangleVolume/((4/3)*Math.PI), 1/3); //Volume of 3D Box = 3D Sphere
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//if(DEBUG) console.log("Simple Radius " + simpleRadius + " Meters")
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//if(DEBUG) console.log("Complex Radius " + complexRadius + " Meters")
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return complexRadius; |
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}, |
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sphereVolume: function(radius) { |
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return((4/3)*Math.PI*Math.pow(radius,3)) |
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}, |
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waterLoss: function(temperature) { |
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return (Math.pow(10,(temperature-20)/80)-1) |
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}, |
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transientSphereSeries: function( density, thermalConduct, heatConvection, cp, rTotal, tempInfinity, splitsNum, deltar, globTemp,pointRadius) { |
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//Not Global Stuff
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var r0 = rTotal; |
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var deltat = 0.1 |
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var alpha = thermalConduct/(density*cp) |
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var h=heatConvection;
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for (var j=0; j<(1/deltat); j++ ) { |
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var dTdr=[] |
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// globTemp[splitsNum-1] should be last entry in globtemp
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for (var k=0; k<splitsNum; k++){ |
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if (k==0) { |
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dTdr.push((globTemp[1] - globTemp[0])/deltar) } |
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else if (k==splitsNum-1) { |
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dTdr.push((globTemp[splitsNum-1] - globTemp[splitsNum-2])/deltar)} |
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else { |
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dTdr.push((globTemp[k+1] - globTemp[k-1])/(2*deltar))} |
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} |
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dTdr[splitsNum-1] = heatConvection*(tempInfinity-globTemp[splitsNum-1])/thermalConduct |
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var parenthesis = [] |
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for (var k=0; k<splitsNum; k++){ |
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parenthesis.push(dTdr[k]*pointRadius[k]) |
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} |
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dPdr = [] |
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for (var k=0; k<splitsNum; k++){ |
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if (k==0) { |
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dPdr.push((parenthesis[1] - parenthesis[0])/deltar) } |
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else if (k==splitsNum-1) { |
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dPdr.push((parenthesis[splitsNum-1] - parenthesis[splitsNum-2])/deltar)} |
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else { |
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dPdr.push((parenthesis[k+1] - parenthesis[k-1])/(2*deltar))} |
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} |
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for (var k=0; k<splitsNum; k++){ |
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globTemp[k]=alpha*dPdr[k]/Math.pow(pointRadius[k],2)*deltat + globTemp[k] //dTdr * deltaT in one loop
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} |
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//dTdt(1)=dTdt(1)/2;
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} |
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console.log("dPdr" + dPdr) |
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return(globTemp) |
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}, |
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/* Utility Functions */ |
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C2F: function( celsius ){ |
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return ( (celsius*(9/5)) + 32 ); |
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}, |
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F2C: function( farenheit ) { |
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return ( (farenheit-32) *(5/9) ); |
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}, |
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lbs2kgs: function(pounds){ |
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return pounds * 0.453592 |
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}, |
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randRange: function(min, max){ |
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return Math.floor(Math.random()*(max-min+1))+min; |
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}, |
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cookCondition: function(cookValue,volume){ |
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var multiplier = 1; |
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if (cookValue>=multiplier*600000) { |
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return ["Fire", (cookValue-600000)/(multiplier*600000),"fire"]; |
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} |
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else if(cookValue>=multiplier*250000) { |
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return ["Burnt", (cookValue-250000)/(multiplier*600000), "burnt"]; |
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} |
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else if (cookValue>=multiplier*150000) { |
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return ["Dry", (cookValue-150000)/(multiplier*250000), "dry"]; |
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} |
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else if (cookValue>=multiplier*85000){ |
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return ["Cooked", (cookValue-12000)/(multiplier*150000), "overcooked"]; |
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} |
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else if (cookValue>=multiplier*12000) { |
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return ["Cooked", (cookValue-12000)/(multiplier*150000), "cooked"]; |
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} |
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else if (cookValue>=multiplier*10000){ |
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return ["Undercooked", (cookValue-5000)/(multiplier*12000), "slightly cooked"]; |
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} |
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else if (cookValue>=multiplier*5000) { |
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return ["Undercooked", (cookValue-5000)/(multiplier*12000), "undercooked"]; |
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} |
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else { |
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return ["Raw", 1, "raw"]; |
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} |
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} |
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} |
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//Running the Program Stuff
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/* |
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var ovenObject = new OvenModel(); |
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var turkey = new TurkeyModel(9, ovenObject); |
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globalTime=0; |
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setInterval(function(){ovenObject.secondTick();},1000); |
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*/ |
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