"A Procedure for Predicting Pressure Loss Coefficients of Duct Fittings Using Computa- tional Fluid Dynamics (RP-1493)." HVAC&R Research 18 (6): 1168-1181.Liu W,Long Z,Chen Q.A procedure for predicting pressure loss coefficients of duct fittings using CFD(RP-1493)[J].HVAC&R Research,...
Minor loss coefficients for different components in air duct distribution systems: Air Duct Components - Minor Dynamic Loss Coefficients Component or FittingMinor Loss Coefficient -ξ - 90o bend, sharp 1.3 90o bend, with vanes 0.7 90o bend, rounded radius/diameter duct <1 0.5 90o bend, rounde...
Minor loss coefficient diagrams for air ductwork, bends, expansions, inlets and outlets - SI units. Colebrook Equation Friction loss coefficients in pipes, tubes and ducts. Copper Tubes - Pressure Loss vs. Water Flow Water flow and pressure loss (psi/ft) due to friction in copper tubes ASTM ...
8.6.2.1 Local loss coefficients In dynamically similar flow streams, a dimensionless coefficient (C) has the same value and is therefore a useful parameter in the analysis of flow resistance. The fluid resistance coefficient is the ratio of total pressure loss to velocity pressure at the cross se...
Losses in pipe The loss of head due to loss of energy of the flow due to the pipe geometry or the friction between the wall pipes and the flow are considered as the losses developed in pipes. These losses are bifurcated in two types that are Major or ...
Analytical determination of duct fitting loss-coefficients. Appl Energ 1998;61(4):224-9.Mumma, S.A., T.A. Mahank, and Y.P. Ke. 1997. Analytical determina- tion of duct fitting loss-coefficients. Applied Energy 61:229-47.S. A. Mumma, T. A. Mahank, and Y.-P. Ke, "Analytical...
Mohammad Salehi, Ahmad K. Sleiti & Stephen Idem (2017) "Study to identify computational fluid dynamics models for use in determining HVAC duct fitting loss coefficients", Science and Technology for the Built Environment, 23:1, 181-191, DOI: 10.1080/23744731.2016.1204889...
The aspect ratio for both main and branch ducts was varied from 2.2 to 3.8 using combinations of three main duct sizes and four branch duct sizes. A logarithmic model was used to correlate branch and main loss coefficients as functions of branch-to-common and main-to-common flow rate ratio...
Major and minor loss in pipes, tubes and duct systems. Pipe and Tube System Components - Minor (Dynamic) Loss Coefficients Minor loss coefficients for components used in pipe and tube systems. Pipe Line Velocities vs. Fluid Typical fluid flow velocities for common liquids, gases and vapors...
Salehi, Mohammad.Engineering,PetroleumSalehi, M., A. Sleiti, and S. Idem. 2016. Study to identify CFD models for use in determining HVAC duct fitting loss coefficients. Science and Technology for the Built Environment (in press).