Numerical and modeling issues in application of CFD to flow in a simplified plenum relevant to a prismatic VHTR

Karaismail, Ertan

doi:10.1016/j.nucengdes.2010.02.025

Cited by 6 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Influence of mesh grids. Mesh sensitivity analysis was conducted referring to the method suggested by Karaismail et al 37 Three mesh densities with different factors (the distance between nodes on each edge) corresponding to 6.61 million grids (fine), 4.47 million grids (medium), and 2.86 million grids (coarse) were generated. Because the moment coefficient, lift force coefficient, and side force coefficient are almost equal to zero at horizontal condition, the pressure drag force coefficient with different mesh densities was compared.…”

Section: Validation Of the Cfd Simulation Methodsmentioning

confidence: 99%

A study on the aerodynamic characteristics of a stratospheric airship in its entire flight envelope

Sun

Lin

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part G:

View full text Add to dashboard Cite

Aerodynamic characteristics of a stratospheric airship in its entire flight envelope, including takeoff , ascending, cruising, descending, and landing, is an important part of its research topic. In this paper, experiments of wind pressure measurement on a 1/30-scale stratospheric airship model were carried out to obtain a better assessment of the aerodynamic characteristics during the cruising process. Based on the wind pressure distribution, the effects of pitch angle, yaw angle, and combined angles (pitch angle and yaw angle acted simultaneously) on the aerodynamics of the airship were analyzed. In addition, the contributions of different portions of the airship hull (namely head, middle, and tail) to the aerodynamic forces and moments were discussed. The experimental results imply that the tail portion is the main contributor to pressure drag force. The combined angles significantly increase aerodynamic forces and rolling moment, and the rolling moment produced by the middle portion accounts for the major proportion. Secondly, the computational fluid dynamics method was verified and employed to study the aerodynamic characteristics of the full-scale model in its entire flight envelope based on the decision of the wind environment parameters and attitude. As a main result, it can be concluded that, more attention should be paid to the airship when it is located in the troposphere and near the ground with an inclined takeoff angle.

show abstract

Section: Validation Of the Cfd Simulation Methodsmentioning

confidence: 99%

A study on the aerodynamic characteristics of a stratospheric airship in its entire flight envelope

Sun

Lin

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part G:

View full text Add to dashboard Cite

show abstract

“…Mathematical Model. Assuming the gas flow condition inside the afflux as the turbulence of incompressible fluid, then the whole process can be described by the equations down below [4,5,6,7]:…”

Section: Modelingmentioning

confidence: 99%

Study on Internal Flow Field of the Afflux Device Based on CFD

Tu¹,

Feng

et al. 2016

AMM

View full text Add to dashboard Cite

In the design of afflux device for the air dryer safety valve, a rational structure can improve the gas flow condition and suppress the pulsation noise as well. This paper designed an afflux device required little installation space, its physical and mathematical model were built up then. The simulation of the internal flow field is processed with the CFD (Computational Fluid Dynamics) software Fluent, which interprets the device inner structure’s impact on the flow field characteristics and silencing performance. The numerical simulation provides the designers with a reliable approach for the design of the afflux device.

show abstract

Computational study of full-scale VHTR lower plenum for turbulent mixing assessment

Clifford

Fradeneck

Oler

et al. 2019

Annals of Nuclear Energy

View full text Add to dashboard Cite

Numerical and modeling issues in application of CFD to flow in a simplified plenum relevant to a prismatic VHTR

Cited by 6 publications

References 6 publications

A study on the aerodynamic characteristics of a stratospheric airship in its entire flight envelope

A study on the aerodynamic characteristics of a stratospheric airship in its entire flight envelope

Study on Internal Flow Field of the Afflux Device Based on CFD

Computational study of full-scale VHTR lower plenum for turbulent mixing assessment

Contact Info

Product

Resources

About