Numerical study of recovery effect and impingement heat transfer with submerged circular jets of large Prandtl number liquid

Autor:	Q. Zheng, X.C. Lee, C. F. Ma, Y.Q. Tian, Y. Zhuang
Rok vydání:	1997
Předmět:	Fluid Flow and Transfer Processes Physics Work (thermodynamics) Mechanical Engineering Prandtl number Nozzle Thermodynamics Reynolds number Laminar flow Mechanics Condensed Matter Physics Physics::Fluid Dynamics symbols.namesake Heat transfer symbols Turbulent Prandtl number Magnetic Prandtl number
Zdroj:	International Journal of Heat and Mass Transfer. 40:2647-2653
ISSN:	0017-9310
DOI:	10.1016/s0017-9310(96)00263-3
Popis:	A numerical study was conducted to characterize the thermal behavior of laminar circular liquid jets. The main goal of this work was to clarify the significant recovery effect of large Prandtl number liquid jets reported by the present authors. Radial distribution of local recovery factor was studied in numerical detail. The effects of many factors were investigated including Reynolds number, Prandtl number, nozzle-to-plate spacing, jet velocity, nozzle diameter and velocity profile at nozzle exit. Very large recovery factors over 20 were obtained with high Prandtl number fluid jets at medium velocity. The results exhibited good agreement with the experimental data by the present authors, verifying the great significance of recovery effect with large Prandtl number liquid jets.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::aaf2d436fe05d3f17e330cfa5dfcd604 https://doi.org/10.1016/s0017-9310(96)00263-3 Zobrazit plný text záznamu Full Text from ScienceDirect