نتایج جستجو برای: مدل توربولانسیsst k ω

تعداد نتایج: 518260  

2004
HAIM BREZIS PETRU MIRONESCU

1. Introduction. A classical result about composition in Sobolev spaces asserts that if u ∈ W k,p (Ω)∩L ∞ (Ω) and Φ ∈ C k (R), then Φ • u ∈ W k,p (Ω). Here Ω denotes a smooth bounded domain in R N , k ≥ 1 is an integer and 1 ≤ p < ∞. This result was first proved in [13] with the help of the Gagliardo-Nirenberg inequality [14]. In particular if u ∈ W k,p (Ω) with kp > N and Φ ∈ C k (R) then Φ • ...

Journal: :ESAIM: Control, Optimisation and Calculus of Variations 2021

Let Ω ⊆ ℝ 2 be a domain, let X rearrangement invariant space and f ∈ W 1 (Ω, ) homeomorphism between (Ω). Then there exists sequence of diffeomorphisms k converging to in the ).

Journal: :CoRR 2005
Tomasz Suslo

The aim of the paper is to derive the complex-valued least-squares estimator for bias-noise mean and variance. 1. Kriging Let us consider a stationary random process ǫ = {ǫj; N1 ∋ j ⊃ i = 1, . . . , n} with zero mean E{ǫi} = E{ǫj} = E{ǫ} = 0 and the background trend ∑ k fjkβ k = fjkβ k (some known mean function m(j) with unknown regression parameters β, where k = 1, 2, . . . ) then Vj = ǫj +m(j...

2008
Landon Rabern

Some bounds on convex combinations of ω and χ for decompositions into many parts Abstract A k–decomposition of the complete graph K n is a decomposition of K n into k spanning subgraphs G 1 ,. .. , G k. For a graph parameter p, let p(k; K n) denote the maximum of k j=1 p(G j) over all k–decompositions of K n. It is known that χ(k; K n) = ω(k; K n) for k ≤ 3 and conjectured that this equality ho...

Journal: :CoRR 2003
Toby Ord Tien D. Kieu

We show how to determine the k-th bit of Chaitin’s algorithmically random real number Ω by solving k instances of the halting problem. From this we then reduce the problem of determining the k-th bit of Ω to determining whether a certain Diophantine equation with two parameters, k and N , has solutions for an odd or an even number of values of N . We also demonstrate two further examples of Ω i...

2005
A. GIVENTAL

T : C −−−−→ R+  yM integer matrix T r ←−−−− R Then the toric manifold X is defined to be J(ω)/T r , where ω is a point in K, an open cone in R (please refer to previous lectures). Assume that X is smooth, i. e. T r action on J(ω) is free, we have: H∗(X) = H∗ T r(J (ω)) We first notice that J(ω) is T-equivariantly homotopic to J(K) where J(K) = C \ ∪ (Coordinate subspaces which miss K under J) .

Journal: :Asymptotic Analysis 2014
Huyuan Chen Laurent Véron

If p ∈ (0, N N−2α ), α ∈ (0, 1), k > 0 and Ω ⊂ R is a bounded C domain containing 0 and δ0 is the Dirac measure at 0, we prove that the weak solution of (E)k (−∆) u + u = kδ0 in Ω which vanishes in Ω is a weak singular solution of (E)∞ (−∆) u + u = 0 in Ω \ {0} with the same outer data. Furthermore, we study the limit of weak solutions of (E)k when k → ∞. For p ∈ (0, 1+ 2α N ], the limit is inf...

2010
Marlos A.G. Viana

The Fourier transforms x̂j = ∑ k xkω , k, j = 0, 1, . . . , n− 1 of a data vector x with scalar components xk indexed by n-fold planar rotations ω k define a n × n Hermitian matrix F with entries ωjk/√n, so that x̂ = √n Fx and the inverse Fourier transform is simply x = F∗x̂/√n. Here, the frequencies ω and their harmonics ω fully describe the set (Ĝ) of all n irreducible representations of the Abe...

پرتاب کننده های جامی شکل یکی از انواع مهم مستهلک کننده ها می باشند و نقش استهلاک انرژی جریان در سرریز ها را به عهده دارند. در این پژوهش به بررسی خصوصیات هیدرولیکی جریان بر روی پرتابه جامی شکل با مدل عددی  فلوئنت پرداخته شده است. در این تحقیق به منظور گسسته­سازی محیط شبیه­سازی از سه نوع شبکه محاسباتی سازمان یافته (درشت، متوسط و ریز) استفاده شد. به منظور شبیه­سازی جریان از مدل­های آرام،  k-ε (Sta...

2006
Pavel Shvartsman

We give an intrinsic characterization of the restrictions of Sobolev W k p (R n), Triebel-Lizorkin F s pq (R n) and Besov B s pq (R n) spaces to regular subsets of R n via sharp maximal functions and local approximations. The purpose of this paper is to study the problem of extendability of functions defined on measurable subsets of R n to functions defined on the whole space and satisfying cer...

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