Print Email Facebook Twitter Influence of a local obstruction of heat transfer in packed beds Title Influence of a local obstruction of heat transfer in packed beds Author Ginoux, J.J. Joly, C. Institution Von Karman Institute for Fluid Dynamics Date 1972-05-01 Abstract The purpose of this study is to find the influence of a local Obstruction on heat transfer between one particle in a-p packed bed and the coolant gas which is forced through it. A method is chosen and developed, giving average as well as local heat transfer coefficients in the case of a packed bed containing spherical particles of constant diameter. The results show: -an important decrease of the average cooling of a sphere near the obstruction. The measurements can be correlated by an expression such as: Nu = A.ReB where Nu is the Nusselt number, Re the Reynolds number and A, B constants depending upon the type and the amount of obstruction. -important local variations of the heat transfer coefficient over the surface of a sphere. This work was conducted for the “gas cooled breeder reactor association” and presented at the Thermohydraulics Specialist Meeting at Windscale on May 17-19, 1972, in connection with the ENEA GCFR Programme. To reference this document use: http://resolver.tudelft.nl/uuid:b4c94dd0-634a-4855-86ce-778dce783860 Publisher Von Karman Institute for Fluid Dynamics Source VKI Training Center for Experimental Aerodynamics Technical Note 80 Part of collection Aerospace Engineering Reports Document type report Rights (c) 1972 Von Karman Institute for Fluid Dynamics Files PDF Tech_Note_0080.pdf 12.67 MB Close viewer /islandora/object/uuid:b4c94dd0-634a-4855-86ce-778dce783860/datastream/OBJ/view