| 21. | Applying the Reynolds transport theorem, one can change the reference to an arbitrary ( non-fluid ) control volume V c.
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| 22. | It is often derived from a physical basis using Darcy's law and a conservation of mass for a small control volume.
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| 23. | The control volume integration of the steady part of the equation is similar to the steady state governing equation s integration.
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| 24. | Where " n " is the normal of the surface of the control volume and " V " is the volume.
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| 25. | What interests us is the change in density of a control volume that moves along with the flow velocity, "'u " '.
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| 26. | This equation represents the balance of generation of the property ? in a Control volume and the fluxes through its cell faces.
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| 27. | The second law of thermodynamics requires that the dissipation term is always positive : viscosity cannot create energy within the control volume.
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| 28. | At steady state, a control volume can be thought of as an arbitrary volume in which the mass of the continuum remains constant.
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| 29. | As a continuum moves through the control volume, the mass entering the control volume is equal to the mass leaving the control volume.
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| 30. | As a continuum moves through the control volume, the mass entering the control volume is equal to the mass leaving the control volume.
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