28 lines
750 B
C
28 lines
750 B
C
scalar initVelMag =
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sqrt
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(
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3.0*(1.0 - 1.0 / totalZoneMols)
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*moleculeCloud::kb*temperature
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/mass
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);
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for (molN = totalMols; molN < totalMols + totalZoneMols; molN++)
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{
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// Assign velocity: random direction, magnitude determined by desired
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// temperature
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// Temperature gradients could be created by specifying a gradient in the
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// zone subDict, or by reading a field from a mesh.
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// The velocities are treated on a zone-by-zone basis for the purposes of
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// removal of bulk momentum - hence nMols becomes totalZoneMols
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velocity = (2.0*rand.vector01() - vector::one);
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velocity *= initVelMag/mag(velocity);
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momentumSum += mass*velocity;
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initialVelocities.append(velocity);
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}
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