Search Results - "De Chant, Lawrence J."

A high velocity plate penetration hole diameter relationship based on late time stagnation point flow concepts by De Chant, Lawrence J.

“…Here we derive a plate penetration hole diameter relationship using late time (steady) stagnation point flow concepts. High-speed impact of thin plates and the…”
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An implicit differential equation governing lumped capacitance, radiation dominated, unsteady, heat transfer by De Chant, Lawrence J

“…Purpose - Although most physical problems in fluid mechanics and heat transfer are governed by nonlinear differential equations, it is less common to be…”
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A simple model to estimate turbulent density fluctuation and associated optical distortion over hydro-dynamically rough surfaces by De Chant, Lawrence J.

“…Here we develop an analysis to estimate root-mean-square (RMS) turbulent density fluctuation over hydro-dynamically rough plates and cones for compressible…”
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The venerable 1/7th power law turbulent velocity profile: a classical nonlinear boundary value problem solution and its relationship to stochastic processes by De Chant, Lawrence J.

“…The 1/7th power law turbulent velocity profile, originally estimated from pipe flow data, provided and continues to provide a simple but effective relationship…”
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An explanation for the minimal effect of body curvature on hypervelocity penetration hole formation by De Chant, Lawrence J.

“…Though not discussed extensively in the literature, it is known among workers in impact and penetration dynamics, e.g. the CTH analysis and development team at…”
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An analytical model for material line kinematics in steady and unsteady buoyancy driven flows in 2-d channels by De Chant, Lawrence J

“…In this note, we use both developing and fully developed buoyant flow in a 2-d channel as a simple flow model useful for approximating buoyancy driven…”
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Validation of a computational implementation of the Grady–Kipp dynamic fragmentation theory for thin metal plate impacts using an analytical strain-rate model and hydrodynamic analogues by De Chant, Lawrence J.

“…Here the analytical plate penetration relationship derived by De Chant [An explanation for the minimal effect of body curvature on hypervelocity penetration…”
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A semi-infinite domain eigenvalue problem describing turbulent velocity fluctuations by De Chant, Lawrence J.

“…This paper discusses the formulation and approximate solution of an eigenvalue problem that provides estimates for fully turbulent velocity fluctuations. The…”
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Quasi-steady approximations to initial value problems with application to sediment transport by De Chant, Lawrence J.

“…We discuss the issues associated with quasi-steady approximations to the heat equation on both finite and infinite domains. The long time behavior of unsteady,…”
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Modelling alluvial fan morphology by Chant, Lawrence J. De, Pease, Patrick P., Tchakerian, Vatche P.

“…A mathematical model which estimates the scale‐independent sediment surface profile of alluvial fans has been developed. This model utilizes a diffusive…”
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Introduction of non-uniformity through linearization of the system governing turbulent, mixing of a scalar quantity in a 2-d mixing layer by De Chant, Lawrence J.

“…The introduction of mathematical non-uniformity in the formulation of the turbulent mixing of a scalar quantity (mass, temperature, etc.) for a 2-d, free shear…”
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Analytical development of non-ideal effects for control volume based mixer models by De Chant, Lawrence J., Seidel, Jonathan A.

“…Many researchers have modeled ideal mixing and entrainment phenomena using control volume methods. The simplicity, robustness and generally useful results make…”
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Extension of a combined analytical/numerical initial value problem solver for turbulent mixing with combustion by De Chant, Lawrence J., Seidel, Jonathan A., Kline, Teresa R.

“…Here, we describe the development of a reacting flow multi-species/combustion methodology, implemented as an extension to the differential reduced ejector…”
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Extension of a combined analytical/numerical initial value problem solver for unsteady periodic flow by De Chant, Lawrence J., Seidel, Jonathan A., Kline, Teresa R.

“…Here we describe analytical and numerical modifications that extend the Differential Reduced Ejector/ mixer Analysis (DREA), a combined analytical/numerical,…”
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An analytical solution for unsteady, inviscid jet formation due to asymmetric 2-d ring collapse by De Chant, Lawrence J.

“…Here we derive a closed form analytical solution for an unsteady inviscid jet caused by the asymmetric collapse of a 2-d ring using linearized, small…”
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Turbulent, mixing of a scalar quantity in a 2-d mixing layer using matched asymptotic expansions by De Chant, Lawrence J.

“…In this note analytical solutions for the turbulent mixing of a scalar quantity (mass, temperature, etc.) for a 2-d, free shear flow are developed…”
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Development of an elementary quantitative competing species model: potential guidelines for exotic/weed plant species control and ecosystem restoration programs by De Chant, Lawrence J., De Chant, Chris J.

“…Here, we develop an approximate solution to the classical Lotka–Volterra two-species differential equation with application to plant system interactions. The…”
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A computationally implementable criterion for the solvability of boundary value problems on an infinite domain by De Chant, Lawrence J.

“…In this note we develop a simple, computationally implementable criterion to determine the solvability of boundary value problems. This criterion for…”
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An analytical skin friction and heat transfer model for compressible, turbulent, internal flows by De Chant, Lawrence J.

“…An analytical skin friction model for compressible, turbulent, internal, fully developed flow involving adiabatic and non-adiabatic, smooth and rough flows has…”
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Simplified turbulence modeling for forced vortical mixers using a kinematic wave analogy by De Chant, Lawrence J., Seidel, Jonathan A.

“…In spite of the rapid advances in both scalar and parallel computational tools, the large number and breadth of variables involved in both design problems make…”
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