Kahveci K.Ece M.C.2024-06-122024-06-1219979.78079E+12https://doi.org/10.1115/IMECE1997-0921https://hdl.handle.net/20.500.14551/16355American Society of Mechanical Engineers (ASME)ASME 1997 International Mechanical Engineering Congress and Exposition, IMECE 1997 - Heat Transfer -- 16 November 1997 through 21 November 1997 -- -- 177551The initial laminar thermal boundary-layer flow past an impulsively started translating and spinning rotational symmetric, permeable isothermal body is investigated. Velocity components and temperature are expanded in series in powers 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 the unsteady flow field displays complex patterns. Surface blowing is observed to aid body spin in facilitating flow separation. Surface heat flux is enhanced near the front stagnation point and in the reversed flow region and reduced around the point of separation. Surface suction is found to increase the heat transfer while surface blowing decreases it. © 1997 American Society of Mechanical Engineers (ASME). All rights reserved.en10.1115/IMECE1997-0921info:eu-repo/semantics/closedAccessBoundary Layer Flow; Heat Flux; Heat Transfer; Isotherms; Laminar Boundary Layer; Unsteady Flow; Boundary-Layer Flows; First Order; Laminar Thermals; Leading Orders; Power; Second Orders; Surface Blowing; Symmetrics; Thermal Boundary Layer; Velocity Components; Flow SeparationConference Object1997-U2932992-s2.0-85126833636N/A