About the intensification of convective heat transfer from combustion products to the walls of a cylindrical shaped pulsing combustion chamber

International Scientific and Practical Conference: Water Power Energy Forum 2018

Sitnikov, O.R.^1 ; Pavlov, G.I.^1 ; Khakimzyanova, Y.I.^1

Kazan National Research Technical University Named after A.N. Tupolev - KAI, Karl Marx st., 10, Kazan, Russia^1

关键词: Combustion products;    Convective heat transfer;    Heat exchange;    Heating surfaces;    Pulsating velocities;    Stationary flow;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/288/1/012117/pdf
DOI  :  10.1088/1755-1315/288/1/012117

来源: IOP

【 摘 要 】

Franke's critical dependence determines the theoretical relationship for the numbers Nu for pulsating and stationary flow regimes. It is based on the heat exchange intensification hypothesis due to the interaction of the pulsating velocity profile and the boundary layer near the heating surface. The article presents the results of studies to test the efficiency of the Franke's ratio for a given range of pulsed combustion chamber diameters, as well as to determine the influence of the geometric parameters of the chamber on the convective heat transfer from the combustion products to the walls of the chamber.