Ghasemi, Hadi2019-11-132019-11-13December 22016-12December 2https://hdl.handle.net/10657/5423This thesis studies non-isothermal buoyancy-driven exchange flow of two miscible Newtonian fluids in an inclined pipe experimentally. The cold heavy fluid is released into the hot light one in an adiabatic small-aspect-ratio pipe in the Boussinesq limit. The maximal rate of interpenetration of the fluids in non-isothermal case is similar to the isothermal limit, maximal rate occurs at an intermediate angle. There has also been observed a novel asymmetric behavior in the flow never observed before in the isothermal limit in which the cold finger appears to advance faster than the hot one. Backed by meticulously-designed supplementary experiments, this asymmetric behavior is hypothetically associated with the wall contact and the formation of a warm less-viscous film of the fluid lubricating the cold more-viscous finger along the pipe. The asymmetric behavior of the flow is finally quantified over the full range of non-isothermal experiments carried.application/pdfengThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).Non-isothermalBuoyancy-driven flowBoussinesq limitAsymmetricViscous film2019-11-13Thesisborn digital