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Introduced back the normalization for the integration of the velocity distribution because average velocity was multiplied back in the calculation of the flux, added the missing end for parfor loop.

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Karthik 2021-07-15 16:47:13 +02:00
parent 504b7769f9
commit b29baf29d5
1 changed files with 20 additions and 19 deletions
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39
+Simulator/@Oven/initialVelocitySampling.m
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@ -12,7 +12,7 @@ function ret = initialVelocitySampling(this, MOTObj)
* velocity.^3 .* exp(-velocity.^2 .* (Helper.PhysicsConstants.Dy164Mass / (2 * Helper.PhysicsConstants.BoltzmannConstant ... * velocity.^3 .* exp(-velocity.^2 .* (Helper.PhysicsConstants.Dy164Mass / (2 * Helper.PhysicsConstants.BoltzmannConstant ...
* this.OvenTemperatureinKelvin))); * this.OvenTemperatureinKelvin)));
c = integral(VelocityDistribution, 0, this.VelocityCutoff); c = integral(VelocityDistribution, 0, this.VelocityCutoff) / integral(VelocityDistribution, 0, inf);
this.ReducedFlux = c * this.ReducedClausingFactor * this.calculateFreeMolecularRegimeFlux(); this.ReducedFlux = c * this.ReducedClausingFactor * this.calculateFreeMolecularRegimeFlux();
@ -31,29 +31,30 @@ function ret = initialVelocitySampling(this, MOTObj)
NormalizationConstantForVelocityDistribution = this.velocityDistributionFunction(MaximumVelocityAllowed); NormalizationConstantForVelocityDistribution = this.velocityDistributionFunction(MaximumVelocityAllowed);
parfor i = 1:n parfor i = 1:n
% Rejection Sampling of speed % Rejection Sampling of speed
y = rand(1);
x = this.VelocityCutoff * rand(1);
while y > ((NormalizationConstantForVelocityDistribution)^-1 * this.velocityDistributionFunction(x)) %As long as this loop condition is satisfied, reject the corresponding x value
y = rand(1); y = rand(1);
x = this.VelocityCutoff * rand(1); x = this.VelocityCutoff * rand(1);
end while y > ((NormalizationConstantForVelocityDistribution)^-1 * this.velocityDistributionFunction(x)) %As long as this loop condition is satisfied, reject the corresponding x value
SampledVelocityMagnitude(i) = x; % When loop condition is not satisfied, accept x value and store as sample y = rand(1);
x = this.VelocityCutoff * rand(1);
end
SampledVelocityMagnitude(i) = x; % When loop condition is not satisfied, accept x value and store as sample
% Rejection Sampling of polar angle % Rejection Sampling of polar angle
w = rand(1);
z = this.ExitDivergence * rand(1);
while w > ((NormalizationConstantForAngularDistribution)^-1 * 2 * pi * this.angularDistributionFunction(z) * sin(z)) %As long as this loop condition is satisfied, reject the corresponding x value
w = rand(1); w = rand(1);
z = this.ExitDivergence * rand(1); z = this.ExitDivergence * rand(1);
while w > ((NormalizationConstantForAngularDistribution)^-1 * 2 * pi * this.angularDistributionFunction(z) * sin(z)) %As long as this loop condition is satisfied, reject the corresponding x value
w = rand(1);
z = this.ExitDivergence * rand(1);
end
SampledPolarAngle(i) = z; %When loop condition is not satisfied, accept x value and store as sample
% Sampling of azimuthal angle
SampledAzimuthalAngle(i)= 2 * pi * rand(1);
ret(i,:)=[SampledVelocityMagnitude(i)*cos(SampledPolarAngle(i)), SampledVelocityMagnitude(i)*sin(SampledPolarAngle(i))*cos(SampledAzimuthalAngle(i)), ...
SampledVelocityMagnitude(i)*sin(SampledPolarAngle(i))*sin(SampledAzimuthalAngle(i))];
end end
SampledPolarAngle(i) = z; %When loop condition is not satisfied, accept x value and store as sample
% Sampling of azimuthal angle
SampledAzimuthalAngle(i)= 2 * pi * rand(1);
ret(i,:)=[SampledVelocityMagnitude(i)*cos(SampledPolarAngle(i)), SampledVelocityMagnitude(i)*sin(SampledPolarAngle(i))*cos(SampledAzimuthalAngle(i)), ...
SampledVelocityMagnitude(i)*sin(SampledPolarAngle(i))*sin(SampledAzimuthalAngle(i))];
end end