نتایج جستجو برای: Supersonic

تعداد نتایج: 5906  

2012
K. Haberkorn

Introduction Conclusions References

H. Khaleghi, M. Mirzaee and S. M. H. Karimian,

In this paper an upwind algorithm based on Roe’s scheme is presented for solution of PNS equations. Non iterative-implicit method using finite volume technique is used. The main advantage of this approach, in comparison with similar upwind methods, is reduction of oscillations around sonic line. This advantage causes the present method to be able to analyze supersonic flows with free stream Mac...

2012
Shigeru Obayashi Shinkyu Jeong Koji Shimoyama Kiyonobu Ohtani Takashi Misaka Kazuyuki Sugimura Yuriko Takeshima Issei Fujishiro

Supersonic Biplane as an Innovative Supersonic Transport Sonic boom noise inhibits the popularization of supersonic aircraft. This study is undertaken to develop a solution to this problem based on supersonic biplane theory. The feasibility of a proposed supersonic biplane concept “MISORA” presented in Fig. 1 has been investigated experimentally as well as numerically. Figure 2 shows a near-fie...

2016
C. L. Daleu R. S. Plant S. J. Woolnough S. Sessions M. J. Herman A. Sobel S. Wang D. Kim A. Cheng G. Bellon P. Peyrille F. Ferry P. Siebesma L. van Ulft

As part of an international intercomparison project, the weak temperature gradient (WTG) and damped gravity wave (DGW) methods are used to parameterize large-scale dynamics in a set of cloud-resolving models (CRMs) and single column models (SCMs). The WTG or DGW method is implemented using a configuration that couples a model to a reference state defined with profiles obtained from the same mod...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2014
James A Johnstone Nathan J Mantua

Over the last century, northeast Pacific coastal sea surface temperatures (SSTs) and land-based surface air temperatures (SATs) display multidecadal variations associated with the Pacific Decadal Oscillation, in addition to a warming trend of ∼ 0.5-1 °C. Using independent records of sea-level pressure (SLP), SST, and SAT, this study investigates northeast (NE) Pacific coupled atmosphere-ocean v...

2015
Lisandro Benedetti-Cecchi Antonio Canepa Veronica Fuentes Laura Tamburello Jennifer E. Purcell Stefano Piraino Jason Roberts Ferdinando Boero Patrick Halpin Juan Carlos Molinero

Jellyfish outbreaks are increasingly viewed as a deterministic response to escalating levels of environmental degradation and climate extremes. However, a comprehensive understanding of the influence of deterministic drivers and stochastic environmental variations favouring population renewal processes has remained elusive. This study quantifies the deterministic and stochastic components of en...

Journal: :journal of computational & applied research in mechanical engineering (jcarme) 2012
gh. payganeh a. hadidi m. hallaji n. garjasi

over the last ten years, robustness of schemes has raised an increasing interest among the cfd community. the objective of this article is to solve the quasi-one-dimensional compressible flow inside a “shubin nozzle” and to investigate bean-warming and flux vector splitting methods for numerical solution of compressible flows. two different conditions have been considered: first, there is a sup...

H. Khaleghi, M. Mirzaee and S. M. H. Karimian,

In this paper an upwind algorithm based on Roe’s scheme is presented for solution of PNS equations. Non iterative-implicit method using finite volume technique is used. The main advantage of this approach, in comparison with similar upwind methods, is reduction of oscillations around sonic line. This advantage causes the present method to be able to analyze supersonic flows with free stream Mac...

A. Hadidi Gh. Payganeh M. Hallaji N. Garjasi

Over the last ten years, robustness of schemes has raised an increasing interest among the CFD community. The objective of this article is to solve the quasi-one-dimensional compressible flow inside a “Shubin nozzle” and to investigate Bean-Warming and flux vector splitting methods for numerical solution of compressible flows. Two different conditions have been considered: first, there is a sup...

2015
S. Vignesh N. Vishnu S. Vigneshwaran M. Vishnu Anand Dinesh Kumar Babu V. R. Sanal Kumar

Numerical studies have been carried out using a validated two-dimensional standard k-omega turbulence model for the design optimization of a thrust vector control system using shock induced self-impinging supersonic secondary double jet. Parametric analytical studies have been carried out at different secondary injection locations to identifying the highest unsymmetrical distribution of the mai...

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