Results 91 to 100 of about 627,886 (336)

Stellar GADGET: A smooth particle hydrodynamics code for stellar astrophysics and its application to Type Ia supernovae from white dwarf mergers

, 2012
Mergers of two carbon-oxygen white dwarfs have long been suspected to be progenitors of Type Ia Supernovae. Here we present our modifications to the cosmological smoothed particle hydrodynamics code Gadget to apply it to stellar physics including but not
Alastuey, Bader, Bate, Benz, D'Souza, Dan, Dan, Demmel, Dewitt, Eggleton, F. K. Röpke, Guerrero, Guillochon, Górski, Iannuzzi, Iben, Langanke, Lorén-Aguilar, Motl, Nomoto, Nomoto, P. Edelmann, Pakmor, Pakmor, Pakmor, Pakmor, Price, R. Pakmor, Raskin, Rauscher, Rosswog, Saio, Saitoh, Sedov, Springel, Springel, Timmes, Timmes, W. Hillebrandt, Wallace, Wallace, Webbink, White, Yoon   +43 more
core   +1 more source

Influence of fuel inhomogeneity on detonation wave propagation in a rotating detonation combustor

Shock Waves
Rotating detonation combustor (RDC) is a form of pressure gain combustion, which is thermodynamically more efficient than the traditional constant-pressure combustors.
P. Raj, J. Meadows
semanticscholar   +1 more source

Reaction Mechanism, Challenges, and Strategies of High‐Energy‐Density Sodium‐Ion Batteries

Advanced Science, EarlyView.
Focusing on high‐energy‐density sodium‐ion batteries, this review highlights the advantages offered by conversion‐type cathode materials. The currently studied cathode materials are systematically introduced. By analyzing sulfur, oxygen, and transition metal halides and other conversion‐type cathodes, the key challenges associated with these cathodes ...
Dan Yu, Yuxin Cui, Qinghao Chen, Lu Gao, Xia Liu, Tianci Li, Wenju Zhu, Quanxiang Li, Weimin Kang   +8 more
wiley   +1 more source

Preliminary Computational Assessment of Disk Rotating Detonation Engine Configurations [PDF]

A rotating detonation engine (RDE) configuration whereby the working fluid enters and exits in a predominantly radial manner is examined using a quasi-two-dimensional computational fluid dynamic simulation. The simulation, based on a Cartesian coordinate
Paxson, Daniel E.
core   +1 more source

Surface Detonations in Double Degenerate Binary Systems Triggered by Accretion Stream Instabilities

, 2009
We present three-dimensional simulations on a new mechanism for the detonation of a sub-Chandrasekhar CO white dwarf in a dynamically unstable system where the secondary is either a pure He white dwarf or a He/CO hybrid.
Bildsten, Chandrasekhar, D'Souza, Dan, Foley, Fryxell, Gokhale, Khokhlov, Krumholz, Livio, Motl, Napiwotzki, Napiwotzki, New, Niemeyer, Perets, Ramirez-Ruiz, Rosswog, Rosswog, Rosswog, Röpke, Segretain, Seitenzahl, Swesty, Timmes, Timmes, Timmes   +26 more
core   +1 more source

Design and Characterization of Highly Diffusive Turbine Vanes Suitable for Transonic Rotating Detonation Combustors

International Journal of Turbomachinery, Propulsion and Power
In rotating detonation engines the turbine inlet conditions may be transonic with unprecedented unsteady fluctuations. To ensure an acceptable engine performance, the turbine passages must be suited to these conditions.
Sergio Grasa, Guillermo Paniagua
semanticscholar   +1 more source

Feline‐Inspired Robot Enabled by Combustion‐Driven Actuators for Agile Motion and High‐Payload Obstacle Traversal

Advanced Science, EarlyView.
Inspired by nature's competitive maneuvers, this study introduces a combustion‐driven soft actuator that powers a multi‐modal “Jump‐and‐Fly Catbot” (JFC). With millisecond response, high‐force output (over 70 times its weight) and precise control (error within 5%), the robot can jump, fly, hover, and escape from challenging environments, achieving ...
Hongkuan Ma, Yang Yang, Zhiguo He, Hongliang Ren, Pengcheng Jiao   +4 more
wiley   +1 more source

Monolithic 3D Printing of Origami‐Inspired Soft Robotics from Sustainable Bio‐Based Resin

Advanced Science, EarlyView.
This work develops a photocurable, bio‐based resin from soybean oil for the monolithic fabrication of sustainable soft robots via Digital Light Processing. An origami‐inspired, vacuum‐actuated soft gripper is designed and fabricated, enabling reliable operation despite the material's lower elongation.
Ramin Montazeri, Hugo de Souza Oliveira, Xin Li, Qingchuan Song, Bastian E. Rapp, Dorothea Helmer, Edoardo Milana   +6 more
wiley   +1 more source

High-resolution numerical simulation of rotating detonation waves with parallel adaptive mesh refinement

Applications in Energy and Combustion Science
Simulations of rotating detonation engines are still dominated by solvers on uniform or statically refined meshes. Here, simulations of premixed rotating detonation waves are conducted using the block-structured adaptive mesh refinement (SAMR) technique.
Han Peng, Ralf Deiterding
doaj   +1 more source

Analysis of Development Trends for Rotating Detonation Engines Based on Experimental Studies

Aerospace
Rotating detonation engines (RDEs), which are Humphrey cycle-based constant-volume combustion engines, utilize detonation waves to attain higher efficiencies compared with conventional constant-pressure combustion engines through pressure gain.
Min-Sik Yun, Tae-seong Roh, H. Lee
semanticscholar   +1 more source