Results 11 to 20 of about 183,834 (247)
Вестник Дагестанского государственного технического университета: Технические науки, 2021 Objectives. To carry out mathematical simulations of changes in time of tornado compositions in channels with projections of semicircular, triangular, square profiles for average Reynolds criteria based on multiblock computing technology with the ...
I. E. Lobanov
doaj +1 more source
Structured Rectangular Tensors and Rectangular Tensor Complementarity Problems [PDF]
Mathematical Problems in Engineering, 2020 In this paper, some properties of structured rectangular tensors are presented, and the relationship among these structured rectangular tensors is also given. It is shown that all the V-singular values of rectangular P-tensors are positive. Some necessary and/or sufficient conditions for a rectangular tensor to be a rectangular P-tensor are also ...
Qingyu Zeng, Jun He, Yanmin Liu
openaire +2 more sources
Experiments on Liquid Flow through Non-Circular Micro-Orifices
Micromachines, 2020 Microfluidics is an active research area in modern fluid mechanics, with several applications in science and engineering. Despite their importance in microfluidic systems, micro-orifices with non-circular cross-sections have not been extensively ...
Stefano Cassineri +4 more
doaj +1 more source
ETNA - Electronic Transactions on Numerical Analysis, 2022 The theory of generalized locally Toeplitz (GLT) sequences is a powerful apparatus for computing the asymptotic spectral distribution of square matrices $A_n$ arising from the discretization of differential problems. Indeed, as the mesh fineness parameter $n$ increases to $\infty$, the sequence $\{A_n\}_n$ often turns out to be a GLT sequence.
Garoni, Carlo +4 more
openaire +5 more sources
Investigation of Sonic Under-expanded Jets Using Slotted Rectangular Mechanical Tabs [PDF]
Journal of Applied Fluid MechanicsStudy on the behavior of jet flows are important for various reasons especially in the fields of aerospace, mechanical engineering, and environmental science.
K. Anusindhiya +2 more
doaj +1 more source
Proses Koneksi Matematis Siswa Kelas VIII Masalah Segiempat
Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan, 2019 : The purpose of this study is to describe the students' mathematical connection process in solving quadrilateral problems. The approach used is a descriptive explorative qualitative approach.
Riska Indah Wardina +2 more
doaj +1 more source
Numerical Investigation of Channel Geometry on the Performance of a Pem Fuel Cell
International Journal of Applied Mechanics and Engineering, 2013 A complete three-dimensional and single phase model for proton exchange membrane (PEM) fuel cells was used to investigate the effect of using different channels geometry on the performances, current density and gas concentration. The proposed model was a
I. Khazaee, M. Mohammadiun
doaj +1 more source
Experimental study on shear mechanical properties of cement mortar specimen with through-step joints under direct shear [PDF]
Archives of Civil Engineering, 2022 In this study, direct shear tests were carried out on cement mortar specimens with singleladder, single-rectangular, and double-rectangular step joints.
Liangxiao Xiong +5 more
doaj +1 more source
Analytical Stress-Strain Model for FRP-Confined Rectangular RC Columns
Frontiers in Built Environment, 2019 One of the major applications of Fiber Reinforced Polymers (FRPs) in construction is in the confinement of reinforced concrete (RC) columns. The performance of FRP-confined concrete in circular columns has been extensively investigated in literature and ...
Konstantinos G. Megalooikonomou +1 more
doaj +1 more source
Rectangular well as perturbation [PDF]
Journal of Mathematical Physics, 1999 We discuss a finite rectangular well of a depth λ2 as a perturbation for the infinite one with λ as a perturbation parameter. In particular, we consider a behavior of energy levels in the well as functions of complex λ. It is found that all the levels of the same parity are defined on infinitely sheeted Riemann surfaces whose topological structures are
Dudek, Mariusz +2 more
openaire +3 more sources