Results 61 to 70 of about 69,703 (170)

Stress Estimation in Viscous Flows Using an Iterative Tikhonov Regularized Stokes Inverse Model

Mathematics
In this paper, we propose and develop a stationary Stokes Inverse Model (SIM) to estimate the stress distributions that are difficult to measure directly in flows.
Yuanhao Gao, Yang Wang, Jizhou Zhang
doaj   +1 more source

On the number of singular points of weak solutions to the Navier‐Stokes equations

Communications on Pure and Applied Mathematics, 2001
AbstractWe consider a suitable weak solution to the three‐dimensional Navier‐Stokes equations in the space‐time cylinder Ω × ]0, T[. Let Σ be the set of singular points for this solution and Σ (t) ≡ {(x, t) ∈ Σ}. For a given open subset ω ⊆ Ω and for a given moment of time t ∈]0, T[, we obtain an upper bound for the number of points of the set Σ(t) ⋒ ω.
openaire   +3 more sources

On the number of determining nodes for the 2D Navier-Stokes equations

Journal of Mathematical Analysis and Applications, 1992
The authors consider a two-dimensional problem for the Navier-Stokes system with periodic boundary conditions \[ u_ t-\nu \Delta u+(u\cdot\nabla)u+\nabla p=f, \qquad \nabla\cdot u=0, \qquad x\in R^ 2, \qquad t>0,\tag{1} \] \(u(x_ 1,x_ 2,t)=u(x_ 1,x_ 2+L,t)\), \(u(x_ 1,x_ 2,t)=u(x_ 1+L,x_ 2,t)\). Let \({\mathcal E}=\{x^ 1,\dots, x^ N\}\) be a collection
Jones, Don A, Titi, Edriss S
openaire   +2 more sources

Wave-driven ocean currents: how the conservative effects of Stokes transport induce large-scale currents

Progress in Earth and Planetary Science
Stokes drift associated with surface waves induces mass transport, which interacts with ocean currents to modify dynamics from situations without waves.
Yasushi Fujiwara, Yoshimasa Matsumura, Hitoshi Tamura   +2 more
doaj   +1 more source

Optimization of Hydraulic Machinery Bladings by Multilevel CFD Techniques

International Journal of Rotating Machinery, 2005
The numerical design optimization for complex hydraulic machinery bladings requires a high number of design parameters and the use of a precise CFD solver yielding high computational costs.
Susanne Thum, Rudolf Schilling
doaj   +1 more source

Stability of fully developed pipe flow of a shear-thinning fluid that approximates the response of viscoplastic fluids

Applications in Engineering Science
The stability of steady, fully developed flow in a long cylindrical pipe for a shear-thinning fluid (which approximates a class of viscoplastic materials) is studied using linear stability analysis. The eigenvalues of the frequency of the perturbation of
Mohan Anand, Paluri Kiranmai, Sai Manikiran Garimella   +2 more
doaj   +1 more source

About the correction of the stokes’s force on Knudsen’s number [PDF]

Izvestiya vysshikh uchebnykh zavedenii. Fizika, 2020
S.O. Gladkov, Aung Zao
openaire   +1 more source

Penyusunan Model Elemen Hingga Interaksi Persamaan Aliran dengan Persamaan Sebaran Udara

Semesta Teknika, 2015
Aeration process is one of water treatment processes. The process consists of two physical phenomena, flow, and spreading of air bubble. This research has developed a finite element model for three-dimensional flow and spreading of air bubble.
Jazaul Ikhsan , Adam Pamudji Rahardjo
doaj  

Quantitative characterization of agglomerate abrasion in a tumbling blender by using the Stokes number approach. [PDF]

AAPS PharmSciTech, 2013
Willemsz TA, Nguyen TT, Hooijmaijers R, Frijlink HW, Vromans H, van der Voort Maarschalk K.   +5 more
europepmc   +1 more source

Stokes to Hadamard-Rybczynski transition: an experimental investigation with argon bubbles rising in palm oil and a sigmoid integrated model for prediction

Journal of King Saud University: Engineering Sciences
A refined model is developed to describe the transition in bubble dynamics from the Stokes to the Hadamard-Rybczynski regime, incorporating Bond number-dependent switch terms for predictions across a wide range of Reynolds numbers. We conduct experiments
Worakrit Thida, Sorasak Danworaphong
doaj   +1 more source