[Oral Presentation]城市混合层颗粒运动的数值模拟研究

Organized By

Hohai University

Monash University

Co-organized by

Southeast University

Jiangxi University of Science and Technology

Northeast University

DUT-BSU Scientific Research and Innovation Center

Suzhou University of Science and Technology

State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment

Sponsoring agency

KELI SDEM Software (Dalian) Co., Ltd.

Sugon Smart Computing Information Technology Co., Ltd.

Beijing Paratera Technology Co., Ltd.

Simpop Information Technology Co., Ltd.

Important Dates

Conference Announcement

December 2023, release First Round Announcement
Abstract Submission Deadline
March 31^th, 2024
Paper Submission Deadline
April 30^th, 2024
Registration
From January 1^st, 2024
Conference Schedule
May 31^st (Friday), 2024 On-Site Registration
June 1^st to 3^rd, 2024 Conference

城市混合层颗粒运动的数值模拟研究

ID：161 Submission ID：117 View Protection：ATTENDEE Updated Time：2024-04-10 17:22:10 Hits：468 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

Session：[No Session] » [No Session Block]

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Abstract

深刻认识城市混合层的流动特征及其与大气颗粒运动之间的相互关系，对研究城市大气污染及其防治等问题具有重要意义。现有的研究更多的关注混合层高度等宏观特征与大气污染之间的关系，少有对其中的大气颗粒的运动特征进行分析。本文采用大涡模拟和拉格朗日粒子追踪法分别求解风场运动与颗粒运动，统计并分析了颗粒在空间上的分布特征。结果表明：单个建筑物的平均流动特征（风速、湍动能、涡量）呈对称分布，整体的颗粒运动状态同样呈对称分布；矩阵排布的建筑物混合层的湍动能整体呈指数形态廓线，近壁区湍动能大，颗粒扩散明显。本研究对城市混合层的湍流特征及颗粒扩散做出分析，为研究城市大气污染特点及防治提供力学机理的支撑。

Keywords

颗粒运动,城市混合层,计算流体动力学,数值模拟

Speaker

田树宝

兰州大学

Submission Author

田树宝兰州大学

李万知兰州大学

黄宁兰州大学

张洁兰州大学

Sponsored By

Hohai University

Panel of Computational Mechanics on Granular Materials, Working Party of Computational Mechanics, Chinese Society of Theoretical and Applied Mechanics

Jiangsu Society of Theoretical and Applied Mechanics