Please use this identifier to cite or link to this item: http://localhost:8081/xmlui/handle/123456789/6974
Title: SUPERIMPOSITION OF EDDIES IN TURBULENT FLOW THROUGH RECTANGULAR DUCT
Authors: Chouhan, Dheeraj
Keywords: CHEMICAL ENGINEERING;EDDIES;TURBULENT FLOW;RECTANGULAR DUCT
Issue Date: 2011
Abstract: It is an inevitable reality that use of a duct to transfer fluid is widely used in many engineering applications. For example, ducts are commonly utilized in piping system, heat exchangers, drainage and centralized air-conditioning system. In the present work emphasis is given on the motion of eddies in fluid and to study the effect of eddissuperimposition on the velocity profile in rectangular duct, also to study the velocity fluctuation when two or more eddies is superimposed. Size of one eddy is not necessary to be same as another eddy., it maybe of different size equal to the integral divisor of duct size or may be very small that the range of micro level. Size distribution of eddies varies considerably in the fluid so to determine exact size of eddies is a challenging work. Although work on superimposition of eddies have been done on macro scale for to study ocean eddies which are ranging from kilometers in size, in this work superimposition of eddies in small scale is studied Turbulent flow in straight rectangular ducts differs from ordinary turbulent pipe (Circular flow) in two important respects; It is three dimensional and hence much more complex in detail and secondary currents have been found to exist, resulting in further complications of the flow. For simulating instantaneous motion of eddies and superimposition of eddies in rectangular duct flow, Matlab programs are written to analyze the effect of turbulence on the velocity profile at different reynold number, without considering well established turbulence model. This problem is of interest from both the engineering and academic viewpoints. Although the engineer is usually concerned only with the gross characteristic of the flow such as mean pressure drop and heat transfer, certain important engineering problems demand a deeper insight into mechanism of flow..
URI: http://hdl.handle.net/123456789/6974
Other Identifiers: M.Tech
Research Supervisor/ Guide: Kumar, Vineet
metadata.dc.type: M.Tech Dessertation
Appears in Collections:MASTERS' THESES (Chemical Engg)

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