Chemical vapor deposition (CVD) on an inclined susceptor: a case-study problem. An important application of convective mass transfer theory is in CVD processes employed to coat surfaces with thin films of metals or semi-conductors. In fact, this turns out to be an example of simultaneous heat and mass transfer with chemical reaction. A flat plate is used as a susceptor to deposit a material for a semi-conductor application. The inclination of the plate is θ to the horizontal. The flow will then be governed by the Falkner–Skan equation described in Section 15.6. Your goal is to set up a mass transfer model and evaluate the variation of the local mass transfer coefficient at various locations in the plate. Usually a constant or nearly constant boundary-layer thickness is preferable. Investigate the conditions leading to this requirement.
When comparing various divisions within a company, describe what problems can arise from evaluating divisions that have different accounting methods, as described in Chapter 11 of your text. Cite three examples of accounting methods that could cause divisions’ profits to differ.
January 2, 2020
1:53 pm
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