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By E E Khalil

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2 states that the system mass is equal to the sum of all the density-volume ­element products for the contents of the system. 3 can express the time rate of change of the system mass as the sum of two control volume quantities, the time rate of change of the mass of the contents of the control volume, and the net rate of mass flow through the control surface. 4) ∫ ρ dV + ∫ ρV ⋅ ndA cv cs where the equation (commonly called the continuity equation) can be applied to a finite control volume (cv), which is bounded by a control s­ urface (cs).

And Hien, W. N. 2001. Indoor air quality, ventilation and energy studies in hot and humid climates. Clima 2000, Napoli. Medhat, A. A. 1999. Air flow patterns in air conditioned rooms. D. Thesis, Cairo University. Khalil, E. E. 1999. Fluid flow regimes interactions in air conditioned spaces. Proceedings of the 3rd Jordanian Mechanical Engineering Conference, Amman, May 1999, p. 79. 11. , and Khalil, E. E. 2003. Simulation of flow, heat transfer and relative humidity characteristics in air-conditioned surgical operating theatres.

Complete convergence of the inner sequence is not necessary, and usually one to three applications of block procedure suffices. The numerical solution is required to pass two acceptance tests. 1% or less. Second, it must be invariant with further increases in the number of grid nodes. These two tests are ­discussed as follows. 5 for the three velocity components as the number of iterations was increased. 3. The detailed information about the required iterations for convergence and iteration time should be highlighted in each case as proof of attaining the final correct predictions.

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