Computational Fluid Dynamic Analysis Sample Clauses

Computational Fluid Dynamic Analysis. ENGINEER will perform computational fluid dynamic (CFD) modeling of the connection of the new filter backwash pipe inlet for the filter flume to verify that maldistribution of the backwash water is minimal due to the off-center introduction. Existing and proposed backwash operation will be modeled to evaluate a relative performance comparison at low and high backwash rates. Each underdrain lateral will be modeled as a series of completely open blocks. The gravel support layer on top of the blocks will be specified as a “porous media” defined with the same headloss as identified by the filter manufacturer. Downstream boundary will be the head over the backwash waste troughs for both conditions. Upstream boundary for the existing conditions will be the FE pipe penetration at the FE flume and for the proposed conditions will be the backwash header just upstream of the tee to the individual filters. Backwash valves located within the boundary limits are assumed to be isolation valves and 100% open. Only one filter will be modeled to represent all filters. Estimated flow distribution performance will only provide insight on the relative comparison between the existing and proposed condition. It should not be considered a prediction of the absolute flow distribution performance. Data required for modeling includes: ▪ Headloss through the underdrain block and plate ▪ Underdrain drawings ▪ Backwash flow rates ▪ Water surface elevation in the filter ▪ Drawings showing the backwash waste troughs CFD model evaluation will provide velocity contour graphics through the various sections of the filter and flow through each series of underdrain blocks.
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Related to Computational Fluid Dynamic Analysis

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