121 - 130 of 184 results for: ME

Physical description of heat conduction in solids, liquids, and gases. The heat diffusion equation and its solution using analytical and numerical techniques. Data and microscopic models for the thermal conductivity of solids, liquids, and gases, and for the thermal resistance at solid-solid and solid-liquid boundaries. Introduction to the kinetic theory of heat transport, focusing on applications for composite materials, semiconductor devices, micromachined sensors and actuators, and rarefied gases. Prerequisite: consent of instructor.

Prediction of heat and mass transfer rates based on analytical and numerical solutions of the governing partial differential equations. Heat transfer in fully developed pipe and channel flow, pipe entrance flow, laminar boundary layers, and turbulent boundary layers. Superposition methods for handling non-uniform wall boundary conditions. Approximate models for turbulent flows. Comparison of exact and approximate analyses to modern experimental results. General introduction to heat transfer in complex flows. Prerequisite: 351A or equivalent.

Fundamentals of heat, mass and charge transport in solids, liquids and gases. Emphasis on the origins of the properties of matter. Translation of scientific understanding to design and predict the behavior of novel engineering devices and systems that span semiconductors, biotechnology, energy and the environment.

Experimental methods associated with the interfacing of laboratory instruments, experimental control, sampling strategies, data analysis, and introductory image processing. Instrumentation including point-wise anemometers and particle image tracking systems. Lab. Prerequisites: previous experience with computer programming and consent of instructor. Limited enrollment.

Topics include quasi-one-dimensional isentropic flow in variable area ducts, normal shock waves, oblique shock and expansion waves, flow in ducts with friction and heat transfer, unsteady one-dimensional flow, and steady two-dimensional supersonic flow.

History of hypersonic flight technology. Inviscid hypersonic flows. Rankine-Hugoniot shock-jump relations at high Mach numbers. Newtonian approximation. Small-disturbance equations for hypersonic aerodynamics. Mach-number independence. Hypersonic similarity. Hypersonic boundary layers and viscous interactions. Aerodynamic heating. Self-similar solutions and analogies. Shock-shock interactions and shock-interference heating. Reentry aerothermodynamics. Effects of the entropy layer. Ablation shields. Thermodynamic and chemical nonequilibrium effects in hypersonics. Transition in hypersonic boundary layers. Effects of incident shock waves. Modern computational developments in hypersonics. Engineering applications of hypersonics in aeronautics and astronautics.

This course is concerned with the design analysis of gas-turbine engines. After reviewing essential concepts of thermo- and aerodynamics, we consider a turbofan gas-turbine engine that is representative of a business aircraft. We will first conduct a performance analysis to match the engine design with aircraft performance requirements. This is followed by examining individual engine components, including compressor, combustor, turbines, and nozzles, thereby increase the level of physical description. Aspects of modern engine concepts, environmental impacts, and advanced engine-analysis methods will be discussed. Students will have the opportunity to develop a simulation code to perform a basic design analysis of a turbofan engine.

Survey of the physics underlying a wide range of microfluidic devices. Course will review basic, simple principles around fluid flow; convective heat and mass transfer; flows of bubbles, drops, and particles; Brownian particles; Taylor dispersion; capillarity; electrokinetics; mixing; jetting; and chemical reactions. Applications of these systems include molecular diagnostics, genetic and proteomic analysis, single-cell analysis, chemical detection, microelectronics cooling, and studies of basic physics and chemistry. We will review recent scientific literature with a goal of deducing simplified explanations, scaling arguments, and back-of-the-envelope approximations of the relevant physics and device performance.

The nature of turbulent flows, statistical and spectral description of turbulence, coherent structures, spatial and temporal scales of turbulent flows. Averaging, two-point correlations and governing equations. Reynolds averaged equations and stresses. Free shear flows, turbulent jet, turbulent kinetic energy and kinetic energy dissipation, and kinetic energy budget. Kolmogorov's hypothesis and energy spectrum. Wall bounded flows, viscous scales, and law of the wall. Turbulence closure modeling for Reynolds averaged Navier Stokes equations. Direct and large eddy simulation of turbulent flows. Subgrid scale modeling. ME300B recommended.