ALAQS Comparison of CFD and Lagrangian Dispersion Methods – Simple Scenario during Take-off
نویسنده
چکیده
This report presents the results of studies on emissions dispersion from an aircraft engine during the take-off phase. Two types of wind configuration were applied to a single and a double jet engine. Results highlight the influence of different parameters on the plume dispersion pattern, and confirm that CFD is an appropriate tool for source dynamics simulations. ALAQS Comparison of CFD and Lagrangian Dispersion Methods – Simple Scenario during Take-off vi EEC/SEE/2007/001 (This page intentionally blank) ALAQS Comparison of CFD and Lagrangian Dispersion Methods – Simple Scenario during Take-off EEC/SEE/2007/001 vii TABLE OF CONTENTS
منابع مشابه
ALAQS- CFD Comparison of Buoyant Free and Wall Turbulent Jets
This report investigates the effects of a solid boundary on the flow properties of a buoyant jet. A comparison was made with the results of a previous ALAQS report on an unbounded jet to highlight the difference jet behaviours. It is believed that the inclusion of the wall represents a further step towards a better understanding of the source dynamics behind an airplane jet engine during the ta...
متن کاملModeling of carbon monoxide dispersion around the urban tunnel portals
The aim of this study is to investigate the problems caused by discharge of polluted air from tunnels into the environment with a specific focus on residential areas. In city tunnels, portal or stacks, pollutant management is a big challenge. Nowadays, air quality management, particularly in urban tunnels, is considered as a part of the ventilation system design. The goal is to see the environm...
متن کاملComparison of the Eulerian and Lagrangian methods for predicting particle transport in enclosed spaces
The computational fluid dynamics (CFD) methods has been widely used in modeling particle transport and distribution in enclosed spaces. Generally, the particle models can be classified as either Eulerian or Lagrangian methods while each has its own pros and cons. This investigation is to compare the two modeling methods with an emphasis on their performance of predicting particle concentration ...
متن کاملCFD modeling of pollution dispersion in a street canyon: Comparison between LES and RANS
CFD modeling using RANS and LES of pollutant dispersion in a three-dimensional street canyon is investigated by comparison with measurements. The purpose of this study is to confirm the accuracy of LES in modeling plume dispersion in a simple street canyon model and to clarify the mechanism of the discrepancy in relation to RANS computation. Simple LES modeling is shown by comparison with wind ...
متن کاملComparison of the kinematic pattern of knee joint flexion in healthy and genu Valgum and genu Varum children during jumping
Introduction & Objectives: genu valgum and genu varum are considered as the most common abnormalities of the knee joint in the lower extremity. Identifying of the mentioned abnormalities in the early stages of life can prevent the occurrence of later problems in the physical condition of a person's life. Therefore, the aim of the present study was to compare the kinematic pattern of knee joint ...
متن کامل