Results 81 to 90 of about 124,500 (193)

Asymmetric supernova remnants generated by Galactic, massive runaway stars

, 2015
After the death of a runaway massive star, its supernova shock wave interacts with the bow shocks produced by its defunct progenitor, and may lose energy, momentum, and its spherical symmetry before expanding into the local interstellar medium (ISM).
Gusdorf, A., Langer, N., Mackey, J., Meyer, D. M. -A., Velazquez, P. F.   +4 more
core   +3 more sources

Unsteady flow mechanisms in the last stage of a transonic low pressure steam turbine - multistage effects and tip leakage flows

Journal of the Global Power and Propulsion Society, 2017
In this paper, an unsteady investigation of the last two stages of a low-pressure steam turbine with supersonic airfoils near the tip of the last stage’s rotor blade is presented.
Ilias Papagiannis, Asad Raheen, Altug Basol, Anestis Kalfas, Reza Abhari, Hisataka Fukushima, Shigeki Senoo   +6 more
doaj   +1 more source

Fishing Vessel Bulbous Bow Hydrodynamics—A Numerical Reverse Design Approach

Journal of Marine Science and Engineering
Naval hydrodynamics typically focus on reducing ship resistance, which can be achieved by incorporating a bulbous bow. This feature is commonly used in the merchant fleet and smaller vessels, such as fishing boats, to minimize wave-making resistance ...
Héctor Rubén Díaz Ojeda, Sebastian Oyuela, Roberto Sosa, Alejandro Daniel Otero, Francisco Pérez Arribas   +4 more
doaj   +1 more source

Large scale motions of Neptune's bow shock: Evidence for control of the shock position by the rotation phase of Neptune's magnetic field [PDF]

The Voyager 2 spacecraft observed high levels of Langmuir waves before the inbound crossing of Neptune's bow shock, thereby signifying magnetic connection of the bow shock.
Cairns, Iver H., Gurnett, Donald A., Kurth, William S., Moses, Stewart L., Smith, Charles W.   +4 more
core   +1 more source

Millimeter-wave near-field imaging with bow-tie antennas

Optics Express, 2015
A near-field reflectometry experiment operating at 60 GHz is built in view of material and circuit inspection. Experiments are always obtained in constant height mode of operation. The bow-tie near-field probe acts mostly as a linearly-polarized electric dipole and allows strongly subwavelength resolution of ≈ λ/130.
Omarouayache, Rachid, Payet, Pierre, Raoult, Jérémy, Chusseau, Laurent   +3 more
openaire   +3 more sources

Sonic boom effect on fish: Observations [PDF]

Motion pictures of fish in a small tank at the time a bullet traveling 1200 m/sec passes a few centimeters above indicate that fish sense the passage of the shock wave but suffer no ill effects. The pressure rise at the bow shock wave was 0.26 atm or 275
Wilkins, M. E.
core   +1 more source

The Martian bow wave - Theory and observation [PDF]

Relationship between Mariner 4 space probe trajectory and calculated location of proposed Martian bow ...
Rizzi, A. W., Spreiter, J. R.
core   +1 more source

Bow Shock Ripples and Their Modulation of Whistler Wave Packets: MMS Observations

Geophysical Research Letters
The terrestrial bow shock is the boundary where supersonic solar wind slows down abruptly near the magnetopause. The shock front geometry could be modulated by surface waves to form rippled structures, which impact the acceleration process of the solar ...
Jing‐Huan Li, Xu‐Zhi Zhou, Shan Wang, Zhi‐Yang Liu, Qiu‐Gang Zong, Shu‐Tao Yao, Anton V. Artemyev, Yoshiharu Omura, Li Li, Chao Yue, Quan‐Qi Shi   +10 more
doaj   +1 more source

The Use of Spatially Multi-Component Plasma Structures and Combined Energy Deposition for High-Speed Flow Control: A Selective Review

Energies
This review examines studies aimed at the organization of energy (non-mechanical) control of high-speed flow/flight using spatially multi-component plasma structures and combined energy deposition.
Olga A. Azarova, Oleg V. Kravchenko
doaj   +1 more source

A computer program for the calculation of the flow field in supersonic mixed-compression inlets at angle of attack using the three-dimensional method of characteristics with discrete shock wave fitting [PDF]

The calculation procedure is based on the method of characteristics for steady three-dimensional flow. The bow shock wave and the internal shock wave system were computed using a discrete shock wave fitting procedure.
Bishop, A. R., Hoffman, J. D., Vadyak, J.   +2 more
core   +1 more source