[Oral Presentation]推移质输运非局部动力学模型研究

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

推移质输运非局部动力学模型研究

ID：251 Submission ID：276 View Protection：ATTENDEE Updated Time：2024-04-30 10:39:02 Hits：509 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

最新的研究强调了非局部过程在表征天然河流中推移质输运的重要性，尤其是在床型复杂或陡坡情况。非局部过程表示泥沙的通量不仅取决于当前位置，还与周围位置的条件相关。即使是在平面水槽中，颗粒在上游位置被水流夹带并产生长距离的运动，最终对推移质通量产生非局部影响。然而，现有的推移质输运模型由于缺乏对区域尺度上非局部推移质输送过程的准确描述，可能会产生较大的误差。本研究提出了一个基于区域的非局部推移质输运（PD）模型，该模型融合了Exner概率方程和近场动力学（PD）微分算子。PD模型在近场动力学微分算子的基础上，利用预先定义的权函数和影响域，封装了推移质泥沙的非局部过程。研究表明，PD模型是连接局部和全域模型的通用工具，它在核函数和影响域上的可变性，使它能够方便地描述推移质输运的次扩散、超扩散和正常扩散行为。

Keywords

推移质泥沙,非局部积分模型,反常扩散,影响域

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