Question

Alt 9) Gas A, in fully developed, laminar air flow, enters a tubular inhaler of A in radius and I in reacts at the inner wall of the inhaler to fom gas B. The per unit area is-r.-k"C. To obtain the Ca profile we do the shell rate of A balance of mass transfer, where the generation term is a catheter of radius Rc placed in a small artery of radius R as shown the moves at a constant speed V. In addition, blood flows through the annular region between R and Re under a constant pressure gradient. Assume a steady-state, fully developed flow of a Newtonian fluid. Determine the effect of the catheter upon the shear 2. (23 pts) Consider figure below. The catheter atr R LE a) (14 pts) Write down the simplified Equations of Continuity and Motion by making appropriate assumptions. b) (6 pts) Identify the boundary conditions and work out the velocity profile c) (3 pts) Determine the volumetric flow rate Q of the flow through the annular region between R and Re 3 (20 pts 5 pts bonus) Thermo-sensitive biomaterial A is stored in a cylindrical container, whose top view is shown in the figure below. To prevent the biomaterials from deactivating the temperature of the biomaterials needs to be maintained at T, which is higher than the ambient temperature Ta An insulation layer is thus applied. Because the container is made of thin metal the temperature difference in the metal layer is negligible. Assume that the thermal conductivity of the insulation material k and the convective heat transfer coefficient between the outer surface of the insulation layer and the air h are constants. The end effects can be neglected, thereby only consider the cylindrical part of L in length, which is in the steady state condition. Note: To is unknown. A in a cylindrical container insulation To

Answer 1

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