A differentiable trajectory approximation to turbulent diffusion
نویسندگان
چکیده
منابع مشابه
A differentiable trajectory approximation to turbulent diffusion
The problem of turbulent diffusion is posed as determining the time evolution of the probability density of the concentration given those for the fluid velocity components, sources, and the initial concentration. At each time, all variables are elements of the Hilbert space L ;(R ), and a finite-dimensional approximation based on expansions in orthonormal basis functions is developed. An expres...
متن کاملRadiation modeling of a turbulent diffusion flame in diesel engine
The purpose of this study is to investigate the effect of radiation heat transfer on temperature distribution and heat flux to the walls of a diesel engine. A diffusion flame is modeled in a simple cylindrical geometry and boundary conditions are defined. A specific solver which can model the turbulent diffusion flame by considering radiation in participating media is used to solve the problem....
متن کاملa 10-bit 50-ms/s parallel successive-approximation analog-to-digital converter
applications such as high definition viedeo reproduction, portable computers, wireless, and multimedia demand, and ever-increasing need for ligh-frequency high-resolution and low-power analog-to-digital converters. flash, two-step flash, and pipeline convertors are fast but consume large amount of power and require large area. to overcome these problems, successive approximation converter blo...
15 صفحه اولNonlinear Approximation from Differentiable Piecewise Polynomials
We study nonlinear n-term approximation in Lp(R) (0 < p ≤ ∞) from hierarchical sequences of stable local bases consisting of differentiable (i.e., Cr with r ≥ 1) piecewise polynomials (splines). We construct such sequences of bases over multilevel nested triangulations of R2, which allow arbitrarily sharp angles. To quantize nonlinear nterm spline approximation, we introduce and explore a colle...
متن کاملParallel Cost Approximation Algorithms for Differentiable Optimization
This paper presents a uniied analysis of decomposition algorithms for continuously diierentiable optimization problems deened on Cartesian products of convex feasible sets. The decomposition algorithms are analyzed using the framework of cost approximation algorithms. A convergence analysis is made for three decomposition algorithms: a sequential algorithm which encompasses the classical Gauss{...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics of Fluids
سال: 1981
ISSN: 0031-9171
DOI: 10.1063/1.863253