Validation of Standard K-Εmodel for the Analysis of Annular Diffuser
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2017, Vol 5, Issue 4
Abstract
A diffuser is a device for converting the kinetic energy of an incoming fluid into pressure. As the flow proceeds through the diffuser there is continuous retardation of the flow resulting in conversion of kinetic energy into pressure energy. Such a process is termed as diffusion. Diffuser forms an important part in flow machinery and structures. The present study involves the CFD analysis of adiffuser to evaluate the proximity of various models. The diffuser considered in the present case has both the hub and casings are diverging with unequal angles and hub angle keeping constant as 5°. The geometries of all the diffusers are calculated for constant area ratio 2 and cone angle 10°, 15°, 20°, 25°. The characteristic quantity such as pressure recovery coefficient distribution at hub and casing walls at various sections .Numerical predictions, made using Computational Fluid Dynamics (CFD), are presenteddescribing the behavior of the performance of conical diffuser with turbulence model i.e.Renormalization-group, STDk-εmodel.STDk-ε model is a new model to be used in this type of application that needs to be compared with wellestablishedmodels. The grid for the conical type geometry of the diffuser was created usingthe GAMBIT package, and the predictions from the CFD models have been obtained.
Authors and Affiliations
Nagendra K. Sharma, Ashish Dixit
Keywords
Related Articles
- EP ID EP24026
- DOI -
- Views 221
- Downloads 9
Four Wheel Leaning Suspension Vehicle - A Review
Four wheel leaning suspension vehicles have been acknowledged as a mainstay in the industrial commercial and domestic domain. The idea is to change the perception remote area for actuating manual operated four wheel lea...
An Experimental Study on Rubberized Concrete by Using Waste Material with the Addition of Human Hair as Fiber
Rubberized concrete is a concrete in which the scrap tire rubber is used as a partial replacement of coarse aggregate. It has been estimated that nearly 1000 million tires reach the end of their useful lives every year...
Application of Internet to Manufacturing Technology: E-Manufacturing Approach
With a rapid vicissitude in technology, especially in the manufacturing sector, customers are authoritatively mandating more value, less peril, and better integration of products, hence there is a desideratum to transmu...
Stability of Vitamins in Pharmaceutical Preparations- A Review
Vitamins are one of the few groups of food constituents in which it is possible to demonstrate quantitatively deterioration in content over a period. The rate of this reduction in vitamin content is influenced by a numb...
Checkpointing Methods for Fault Tolerance on MapReduce: A Review
Big Data is a term for information sets that are huge and complicated in which the traditional data processing applications are not capable to manage with them. MapReduce is a programming model for processing and produc...