LBE in the Framework of Computational-Fluid Dynamics

Numerical Scheme ◽

General Framework ◽

The Past ◽

Made In

This chapter outlines the main properties of LB as a numerical scheme within the general framework of computational fluid dynamics (CFD). The matter has witnessed significant developments in the past decade, and even though the bottomline picture of LB as a very effective numerical scheme stands intact, a number of assessments made in the previous book need some revision. Since the matter is fairly technical, only general notions shall be discussed, leaving in-depth details to the original literature.

Investigation of the Effect of Ski Jump on the Flow Dynamics around Generic Aircraft Carrier

Defence Science Journal ◽

10.14429/dsj.71.15648 ◽

2021 ◽

Vol 71 (2) ◽

pp. 296-303

Author(s):

Rahul Thakur ◽

K. Vignesh Kumar

Keyword(s):

Fluid Dynamics ◽

Degrees Of Freedom ◽

Flow Dynamics ◽

Aircraft Carrier ◽

Six Degrees Of Freedom ◽

The Past ◽

Turbulent Airflow ◽

Flight Deck

The landing operation on an aircraft carrier is a complicated and risky process. Unlike land-based operations, the landing area available on carriers is in continuous motion in all the six degrees of freedom. The ski jump, flight deck, hull, and superstructure of the carrier interact with the oncoming wind’s flow-field which creates a turbulent airflow behind the carrier. This ‘burble effect’ is very dangerous and has caused various mishaps in the past. To complement the work being undertaken at IIT Delhi to study the flow dynamics in the carrier environment, the present study investigates the effect of ski jump and superstructure on the flow around the generic aircraft carrier (GAC). Computational fluid dynamics (CFD) studies are undertaken to simulate the airwake and establish a baseline with the ski jump. Subsequently, further studies are carried out to analyse the sensitivity of the wake to changes in carrier geometry. The introduction of the ski generates a major proportion of turbulence encountered in the aft by the approaching pilot. This is reduced significantly by optimising ski jump geometry in various ways.

Numerical Analysis of Semi-Tangential Ogive Bullet

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.37676 ◽

2021 ◽

Vol 9 (8) ◽

pp. 1869-1883

Author(s):

Avinash T

Keyword(s):

Fluid Dynamics ◽

Numerical Analysis ◽

Computer Aided Design ◽

Steady Increase ◽

The Past ◽

Computer Aided ◽

Parametric Studies ◽

Aided Design

Abstract: The objective of the present study is to design and analyze semi-tangential ogive bullets using simulatation software such as Computer-aided design & Computational Fluid Dynamics (CFD). It is observed that been a quite steady increase in the bullet research design in the past few decades. The nose section of ballistic bullet is the most important part of the design process. Hence design optimizations are achieved by adjusting the bullet's form to improve precision and stability by reducing its drag force. CFD is the study used to verify the findings. Since provides most accurate results. It is observed that present study optimizes the behavior of the at M= 2.5. This present work shows the flow of air around the bullet surface providing pressure & velocity contours at every segment. The Various parametric studies over bullet model are drag co-efficient, ballistic coefficient and turbulence viscosity are plotted’.

Trends in Industry Applications of Computational Fluid Dynamics for Maritime Flows

Journal of Ship Production and Design ◽

10.5957/jspd.2011.27.4.194 ◽

2011 ◽

Vol 27 (04) ◽

pp. 194-201

Author(s):

Milovan Peric ◽

Volker Bertram

Keyword(s):

Fluid Dynamics ◽

Offshore Structures ◽

Model Generation ◽

Process Chain ◽

The Past ◽

Industry Applications ◽

Cfd Applications

This paper surveys developments in Computational Fluid Dynamics (CFD) applications for maritime structures (ships, propellers, and offshore structures) over the past decade. Progress is significant in integrating the process chain, particularly more automated model generation. Increased hardware power and progress in various aspects of the flow solvers allow more sophisticated applications and wider scope of applications. Selected examples taken from industry and research applications show the increasing importance of CFD in earlier design stages.

Stepping Up CFD

Mechanical Engineering ◽

10.1115/1.2002-apr-4 ◽

2002 ◽

Vol 124 (04) ◽

pp. 47-49

Author(s):

Jean Thilmany

Keyword(s):

Fluid Dynamics ◽

Research And Development ◽

Computational Method ◽

Environmental Research ◽

Erosion Model ◽

Suitable Material ◽

The Past ◽

Different Types ◽

Computational Fluid Dynamics Cfd

This article highlights that computational fluid dynamics (CFD) software has become a widely used tool in engineering, biomedical, and environmental research and development in the past few years. CFD might be coupled with multiphysical applications, so users can solve for more than one phenomenon at a time. CFD methods can predict the areas of a component that will see the most damage from the sand, The CFD-based erosion model let the component manufacturer predict the areas of highest erosion and take steps to either reinforce those areas with a suitable material or else redesign the component. CFD will be used even more widely across disciplines and different types of technologies than it is now, but the computational method is already invaluable to many engineers working with varied, unrelated applications.

Deciding the Effective Position of Fuel Injector using Cfd

International Journal of Engineering and Advanced Technology - Regular Issue ◽

10.35940/ijeat.f8448.088619 ◽

2019 ◽

Vol 8 (6) ◽

pp. 1788-1792

Keyword(s):

Fluid Dynamics ◽

Fluid Flow ◽

Physical Properties ◽

Thermal Design ◽

Fuel Injector ◽

Mechanical Device ◽

Flow Rates ◽

Made In

We are going to test the fluid flow of fuel injector by the process of computational fluid dynamics (CFD). Fluid separator is a mechanical device which helps two or more fluid to separate from a mixture. Fluid separator has its application in many pharmaceutical and automobile industries. Fluid separator had made the most promising device in the industry. Most of the modification has been made in the design of the fuel injector with respect to geometry and thermal design. In a CFD, the examination of fluid flow in accordance with its physical properties such as velocity, temperature, density and viscosity are obtained. The study shows the best performance of fuel injector with respect to shape and flow rates. The purpose of this report is to corelate various design of injector in the industry. In this Paper we can find out the effective position of the fuel injector using CFD.