Investigation of combustive flows and dynamic meshing in computational fluid dynamics
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Computational Fluid Dynamics (CFD) is a ﬁeld that is constantly advancing. Its advances in terms of capabilities are a result of new theories, faster computers, and new numerical methods. In this thesis, advances in the computational ﬂuid dynamic modeling of moving bodies and combustive ﬂows are investigated. Thus, the basic theory behind CFD is being extended to solve a new class of problems that are generally more complex. The ﬁrst chapter that investigates some of the results, chapter IV, discusses a technique developed to model unsteady aerodynamics with moving boundaries such as ﬂapping winged ﬂight. This will include mesh deformation and ﬂuid dynamics theory needed to solve such a complex system. Chapter V will examine the numerical modeling of a combustive ﬂow. A three dimensional single vane burner combustion chamber is numerically modeled. Species balance equations along with rates of reactions are introduced when modeling combustive ﬂows and these expressions are discussed. A reaction mechanism is validated for use with in situ reheat simulations. Chapter VI compares numerical results with a laminar methane ﬂame experiment to further investigate the capabilities of CFD to simulate a combustive ﬂow. A new method of examining a combustive ﬂow is introduced by looking at the solutions ability to satisfy the second law of thermodynamics. All laminar ﬂame simulations are found to be in violation of the entropy inequality.
Chambers, Steven B. (2004). Investigation of combustive flows and dynamic meshing in computational fluid dynamics. Master's thesis, Texas A&M University. Texas A&M University. Available electronically from