UFR 4-18 Description: Difference between revisions
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== Review of UFR studies and choice of test case == | == Review of UFR studies and choice of test case == | ||
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The experiments from Ames et al. deal with the flow of air around 8 staggered rows of 7.5 heated pins, spaced at P=2.5D in both stream-wise and span-wise directions (based on center to center distances). The diameter of the pins is set to 0.0254 m (1 inch) and the channel height is twice the diameter (H=2D). The Reynolds numbers <math>Re_D</math> based on the pin diameter and the average gap bulk velocity which have been tested are equal to 3,000, 10,000 and 30,000, respectively. The gap bulk velocity is determined between two adjacent pins of the same row. Taking <math>V_0</math> and <math>V_G</math> as the inlet and gap velocities, respectively, and considering mass conservation, one obtains <math>V_G = P/(P-D) V_0</math>. | The experiments from Ames et al. deal with the flow of air around 8 staggered rows of 7.5 heated pins, spaced at P=2.5D in both stream-wise and span-wise directions (based on center to center distances). The diameter of the pins is set to 0.0254 m (1 inch) and the channel height is twice the diameter (H=2D). The Reynolds numbers <math>Re_D</math> based on the pin diameter and the average gap bulk velocity which have been tested are equal to 3,000, 10,000 and 30,000, respectively. The gap bulk velocity is determined between two adjacent pins of the same row. Taking <math>V_0</math> and <math>V_G</math> as the inlet and gap velocities, respectively, and considering mass conservation, one obtains <math>V_G = P/(P-D) V_0</math>. | ||
Revision as of 18:33, 9 February 2014
Flow and heat transfer in a pin-fin array
Confined Flows
Underlying Flow Regime 4-18
Description
Introduction
Give a brief overview of the UFR in question. Describe the main characteristics of the type of flow. In particular, what are the underlying flow physics which characterise this UFR and must be captured by the CFD methods? If the UFR considered here is of special relevance for a particular AC featured in the KB, this should be mentioned.