Results 71 to 80 of about 9,881,663 (387)

Effect of Mach Number on Stability of Boundary Layer Over a Rotating Cone in Hypersonic Flow

气体物理
Spinning vehicles achieve gyroscopic effects by rotating around their axis. However, transition significantly influences the stability of flight. In this work, a study of instability on the unstable modes in boundary layers over a rotating cone in ...
Yiyang GU, Hao DONG, Shicheng LIU, Yinglei JIANG   +3 more
doaj   +1 more source

A Preconditioned Method for Rotating Flows at Arbitrary Mach Number

Modelling and Simulation in Engineering, 2011
An improved preconditioning is proposed for viscous flow computations in rotating and nonrotating frames at arbitrary Mach numbers. The key to the current method is the use of both free stream Mach number and rotating Mach number to construct a ...
Chunhua Sheng
doaj   +1 more source

Note on the limits to the local Mach number on an aerofoil in subsonic flow [PDF]

, 1948
It has been noted in some experiments that the local Mach number just ahead of a shock wave on an aerofoil in subsonic flow is limited, values of the limit of the order of 1.4 are usually quoted.
Young, A. D.
core   +1 more source

Nonvolatile and Low‐Loss Reconfigurable Optical Switches Using Sb2S3 Phase Change Material

Advanced Photonics Research, EarlyView.
Sb2S3‐assisted hybrid plasmonic waveguide‐based reconfigurable, nonvolatile 1 × 2 switch using an asymmetric directional coupler is presented. Its dual‐polarization functionality ensures its broader applicability and flexibility in integrated photonic systems where polarization diversity is often required.
Nisadur Rahman, Hasan Khaled Rouf
wiley   +1 more source

Interstellar Sonic and Alfv\'enic Mach Numbers and the Tsallis Distribution

, 2011
In an effort to characterize the Mach numbers of ISM magnetohydrodynamic (MHD) turbulence, we study the probability distribution functions (PDFs) of patial increments of density, velocity, and magnetic field for fourteen ideal isothermal MHD simulations ...
A. Lazarian, Arimitsu, Arimitsu, Benjamin M. Tofflemire, Beresnyak, Blakesley Burkhart, Burkhart, Burkhart, Burkhart, Burlaga, Burlaga, Burlaga, Burlaga, Chepurnov, Chepurnov, Chepurnov, Cho, Crovisier, Deshpande, Elmegreen, Elmegreen, Esquivel, Esquivel, Federrath, Green, Heyer, Kim, Kolmogorov, Kowal, Kowal, Kowal, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Levenberg, Lis, Lithwick, Miesch, Miesch, Monin, Narayan, Padoan, Padoan, Padoan, Price, Rosolowsky, Rosolowsky, Stutzki   +54 more
core   +1 more source

Numerical and Experimental Methods for Estimating the Propagation Loss in Microphotonic Waveguides

Advanced Photonics Research, EarlyView.
Finite‐element finite‐difference time domain, eigenmode‐expansion, and volume‐current simulations are benchmarked against cut‐back, ring‐resonator, and OFDR measurements to quantify waveguide propagation loss in integrated photonic circuits. Scattering, absorption, leakage, and back‐reflection contributions are dissected; error sources are ranked; and ...
Francesco Dell’Olio, Samuel M. Hörmann, Teresa Natale, Roel Baets, Alexander Bergmann   +4 more
wiley   +1 more source

Effects of fuel injection speed on supersonic combustion using separation-resistant struts

AIP Advances, 2021
This paper describes the improvement in combustion efficiency achieved using streamwise vorticity and fuel injections when using hypermixer struts at high Mach numbers.
Toshihiko Hiejima, Kaito Nishimura
doaj   +1 more source

Ultralow Loss Coupling Tuning of Photonic Accelerators

Advanced Photonics Research, EarlyView.
A polymer material cured by electron beam is used to perform precise and ultralow loss tuning on photonic accelerators made for highly efficient computation. The versatility of the technique is demonstrated on a large number of directional coupler devices with varying initial coupling ratios and application on a crossbar array for matrix multiplication
Zhongyu Tang, Shabnam Taheriniya, Zhe Zhao, Harish Bhaskaran, Wolfram Pernice, Rongyang Xu   +5 more
wiley   +1 more source

The influence of the Mach number on the stability of radiative shocks [PDF]

Monthly Notices of the Royal Astronomical Society, 2006
We study the stability properties of hydrodynamic shocks with finite Mach numbers. The linear analysis supplements previous analyses which took the strong shock limit. We derive the linearised equations for a general specific heat ratio as well as temperature and density power-law cooling functions, corresponding to a range of conditions relevant to ...
Babulakshmanan Ramachandran, Michael D. Smith, Michael D. Smith   +2 more
openaire   +3 more sources

Techniques and Advances in Ultrafast Photography

Advanced Photonics Research, EarlyView.
This review maps the fast‐growing field of ultrafast photography from early mechanical cameras to modern optical‐computational methods. It organizes techniques into four families (multishot passive/active; single‐shot passive/active), explains how they reach trillion‐frame‐per‐second speeds, compares capabilities and tradeoffs, and highlights ...
Chen Huang, Xin Zhang, Renjie Han, Jiaoyu Fan, Hui Jiang, Yiwen Zhang, Jinghua Yu, Jiamin Wang, Yi Chen, Junjie Sun, Fei Chen   +10 more
wiley   +1 more source