Unsteady mixed convection over spinning isothermal bodies with blowing and suction [Conference Paper
Küçük Resim Yok
Tarih
2000
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
American Society of Mechanical Engineers (ASME)
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Initial development of the laminar thermal boundary-layer flow over an impulsively started translating and spinning axisymmetrical isothermal body with blowing and suction in the case of mixed convection is investigated. Velocity components and temperature are expanded in series in powers of the square root of time. Leading, first and second order functions are obtained analytically and the third, forth and fifth order functions are determined numerically. Application of the general results to a sphere shows that buoyancy driven aiding and opposing flows help surface suction in retarding and surface blowing in facilitating the onset of flow separation respectively. Surface heat flux is increased near the front stagnation point due to the axial inflow created by the body spin and enhanced by the circulating flow inside the separated region. Surface suction is found to increase the heat transfer while the surface blowing decreases it. Aiding and opposing flows increase the surface heat flux around the front and rear stagnation points respectively. © 2000 by ASME.
Açıklama
American Society of Mechanical Engineers (ASME)
ASME 2000 International Mechanical Engineering Congress and Exposition, IMECE 2000 -- 5 November 2000 through 10 November 2000 -- -- 173931
ASME 2000 International Mechanical Engineering Congress and Exposition, IMECE 2000 -- 5 November 2000 through 10 November 2000 -- -- 173931
Anahtar Kelimeler
Boundary Layer Flow; Flow Separation; Heat Flux; Isotherms; Mixed Convection; Axi-Symmetrical; Boundary-Layer Flows; Initial Development; Laminar Thermals; Opposing Flow; Surface Blowing; Surface Heat Fluxes; Surface Suctions; Thermal Boundary Layer; Unsteady Mixed Convection; Laminar Boundary Layer
Kaynak
ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
WoS Q Değeri
Scopus Q Değeri
N/A
Cilt
2000-T
