Computation of 3D Hydrodynamic, Hydromagnetic and Dust-Laden Flows in Protoplanetary Disks and Their Roles in Planetesimal and Star Formation
原行星盘中 3D 流体动力、流体磁力和尘埃流动的计算及其在小行星和恒星形成中的作用
基本信息
- 批准号:0607836
- 负责人:
- 金额:$ 28.85万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2006
- 资助国家:美国
- 起止时间:2006-07-01 至 2009-06-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
ABSTRACTThe research to be carried out here centers on the transportation of mass and angularmomentum in protoplanetary disks surrounding young stars. "Turbulence" or "eddyviscosities" have been invoked to solve a variety of problems, including the transport ofangular momentum outward from a disk to allow mass to accrete onto a central protostar,the accumulation of dust to produce planetesimals, and their ability to act as an enhancedviscosity which allows planetesimals or planets to migrate radially in the disk away fromthe regions in which they formed. However, computing the transport of angularmomentum, dust, planetesimals, and planets within a disk using transport rates from"eddy viscosities" may well be incorrect. Here, the sustainability of another process,magnetohydrodynamic turbulence (which is highly dissipative) and its ability to transportangular momentum, will be studied as a function of the disk's ionization. In addition, theinvestigator's previous work has shown that vortices are efficient at transporting angularmomentum. His 3D modeling further indicates that grains can be trapped in these vorticesand concentrated. Using two new codes, one a hybrid particle/gas code and the other atwo-phase flow code in which one phase is the gas and the other is the dust, theaccumulation of dust in the disk's mid-plane, in the vortices that form within a disk, andin the inter-eddy regions of the turbulence will be examined. All of these locations havebeen suggested to be regions where dust concentrates and then undergoes agglomerationor instability to produce planetesimals. A proposed scenario by which protoplanetarydisks fills with vortices will also be investigated. In this model a small, initialperturbation produces weak internal gravity waves. Those waves, in a rotating, shearingstratified flow, create vortices. The vortices are not steady, but oscillate, creating newgravity waves, and the disk fills with waves and vortices.The tools employed here are applicable to other problems as well, including thecirculation of Jupiter's atmosphere, modeling wake-vortices produced by wide bodyaircraft, and the role of particulates in climate pollution. The results of this work will bedisseminated to the public through public lectures and popular articles. A graduatestudent will be supported and trained in numerical modeling of fluid flows.
摘要这里要进行的研究集中在年轻恒星周围的原行星盘中的质量和角动量的传输。 “湍流”或“涡粘性”已被用来解决各种问题,包括角动量从圆盘向外传输以允许质量吸积到中心原恒星上,灰尘的积累以产生微星子,以及它们作为增强粘度的能力,允许微星子或行星在圆盘中径向迁移远离它们形成的区域。然而,使用“涡流粘度”的传输速率来计算盘内角动量、尘埃、星子和行星的传输很可能是不正确的。在这里,另一个过程的可持续性,即磁流体动力湍流(高度耗散)及其传输角动量的能力,将作为磁盘电离的函数进行研究。此外,研究人员之前的工作表明,涡流可以有效地传递角动量。他的 3D 模型进一步表明,颗粒可以被困在这些漩涡中并集中。使用两种新代码,一种是混合粒子/气体代码,另一种是两相流代码,其中一相是气体,另一相是灰尘,将检查灰尘在圆盘中平面、圆盘内形成的涡流中以及湍流涡流间区域中的积累。所有这些位置都被认为是尘埃集中的区域,然后经历聚集或不稳定而产生微星子。还将研究原行星盘充满涡旋的拟议场景。在这个模型中,一个小的初始扰动会产生微弱的内部重力波。这些波在旋转、剪切分层流中产生涡流。漩涡不是稳定的,而是振荡的,产生新的重力波,圆盘上充满了波浪和漩涡。这里使用的工具也适用于其他问题,包括木星大气环流、宽体飞机产生的尾流涡流建模,以及颗粒物在气候污染中的作用。这项工作的成果将通过公开讲座和热门文章向公众传播。研究生将获得流体流动数值模拟方面的支持和培训。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Philip Marcus其他文献
Depth of a strong jovian jet from a planetary-scale disturbance driven by storms
风暴驱动的行星规模扰动产生的强烈木星喷流的深度
- DOI:
- 发表时间:
2008 - 期刊:
- 影响因子:64.8
- 作者:
A. Sánchez‐Lavega;Glenn S. Orton;R. Hueso;E. García‐Melendo;S. Pérez;A. Simon;J. F. Rojas;J. M. Gómez;P. Yanamandra;L. N. Fletcher;J. Joels;J. Kemerer;J. Hora;E. Karkoschka;I. Pater;M. Wong;Philip Marcus;Noemi Pinilla;F. Carvalho;C. Go;D. Parker;M. Salway;M. Valimberti;A. Wesley;Zac Pujic - 通讯作者:
Zac Pujic
The Israel Family Court – Therapeutic jurisprudence and jurisprudential therapy from the start
- DOI:
10.1016/j.ijlp.2018.06.006 - 发表时间:
2019-03-01 - 期刊:
- 影响因子:
- 作者:
Philip Marcus - 通讯作者:
Philip Marcus
E NFORCING H ARD P HYSICAL C ONSTRAINTS IN CNN S T HROUGH D IFFERENTIABLE PDE L AYER
通过可微偏微分方程层在 CNN 中强化硬物理约束
- DOI:
- 发表时间:
2020 - 期刊:
- 影响因子:0
- 作者:
Chiyu “Max”;Jiang;K. Kashinath;Lawrence Berkeley;National Lab;Philip Marcus - 通讯作者:
Philip Marcus
Fibrocystic Lung Disease: An Unusual Cause
- DOI:
10.1378/chest.91.1.113 - 发表时间:
1987-01-01 - 期刊:
- 影响因子:
- 作者:
Steven G. Orshan;Leonard J. Rossoff;Philip Marcus - 通讯作者:
Philip Marcus
Philip Marcus的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Philip Marcus', 18)}}的其他基金
Collaborative EAGER Proposal: The Dead Zones of Protoplanetary Disks are Not Dead - How Turbulence Transports Angular Momentum and Forms Planetesimals
协作式 EAGER 提案:原行星盘的死区并未死——湍流如何传输角动量并形成星子
- 批准号:
1510703 - 财政年份:2015
- 资助金额:
$ 28.85万 - 项目类别:
Standard Grant
Title: RUI & Collaborative Research: Planet Embryos in Vortex Wombs: Simulations of Gas, Dust and Magnetic Fields in Protoplanetary Disks and the Formation of Planets
标题: 锐
- 批准号:
1010046 - 财政年份:2010
- 资助金额:
$ 28.85万 - 项目类别:
Continuing Grant
Automated extraction of Saturn's winds and comparison with 3D simulations of Saturn's two polar vortices and transient vortices
自动提取土星风并与土星两极涡旋和瞬态涡旋的 3D 模拟进行比较
- 批准号:
1009907 - 财政年份:2010
- 资助金额:
$ 28.85万 - 项目类别:
Continuing Grant
Variability in Jupiter's Weather and Climate
木星天气和气候的变化
- 批准号:
0808200 - 财政年份:2008
- 资助金额:
$ 28.85万 - 项目类别:
Standard Grant
Vortices in Protoplanetary Disks: Their Role in Angular Momentum Transport and Planetesimal Formation
原行星盘中的涡旋:它们在角动量传输和星子形成中的作用
- 批准号:
0098465 - 财政年份:2001
- 资助金额:
$ 28.85万 - 项目类别:
Continuing Grant
Vortex Structure, Inverse Cascades, and Turbulent Bursts in Rotating, Stratified Flows
旋转层流中的涡流结构、逆级联和湍流爆发
- 批准号:
9978842 - 财政年份:2000
- 资助金额:
$ 28.85万 - 项目类别:
Standard Grant
De-Stabilization of Aircraft Wake Vortices
飞机尾流涡的失稳
- 批准号:
9632579 - 财政年份:1996
- 资助金额:
$ 28.85万 - 项目类别:
Continuing Grant
The Formation and Maintenance of the Zonal Winds of Jupiter and Saturn
木星和土星纬向风的形成和维持
- 批准号:
9423305 - 财政年份:1995
- 资助金额:
$ 28.85万 - 项目类别:
Continuing Grant
Computer-Enhanced Classroom Instruction in Mathematics
计算机增强数学课堂教学
- 批准号:
9352029 - 财政年份:1993
- 资助金额:
$ 28.85万 - 项目类别:
Standard Grant
The Dynamics of Long-Lived Planetary Vortices
长寿行星涡旋的动力学
- 批准号:
9119766 - 财政年份:1992
- 资助金额:
$ 28.85万 - 项目类别:
Continuing Grant
相似国自然基金
锰酸锂基复合气凝胶的3D打印构筑及其提锂机制研究
- 批准号:JCZRLH202500778
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
3D细胞球来源的凋亡小体修饰间充质干细胞的制备及“内外兼修”策略的构建用于脊髓损伤修复的作用机制研究
- 批准号:QN25H060008
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
3D打印楔形梯度多孔支架的优化构建及促进HTO术后骨再生修复的实验研究
- 批准号:
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
基于3D Slicer的颅内动脉瘤破裂风险评估机器学习模型开发及临床推广应用
- 批准号:
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
智能3D超微血管成像联合实时剪切波弹性评估胎盘功能对高血压孕妇子痫前期的预测效能分析
- 批准号:
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
3D打印PH-GBS@CCP复合支架诱导骨肉瘤铜死亡及增效抗PD-1治疗的作用机制研究
- 批准号:
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
双重固化3D打印连续纤维C/C复合材料成型与渗碳致密化机理研究
- 批准号:2025JJ60269
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
载椎体骨髓干细胞外泌体3D打印n-HA/PA66生物支架的研制及促脊柱融合机制研究
- 批准号:2025JJ80409
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
基于微流控技术的3D细胞培养体系构建及在乳腺癌耐药机制中应用研究
- 批准号:2025JJ70487
- 批准年份:2025
- 资助金额:0.0 万元
- 项目类别:省市级项目
多级结构仿生3D打印生物陶瓷调控
PI3K/Akt信号通路介导细胞应激反应促
进血管化骨再生的作用机制研究
- 批准号:
- 批准年份:2025
- 资助金额:10.0 万元
- 项目类别:省市级项目
相似海外基金
Developing a 3D printed skin model using a Dextran - Collagen hydrogel to analyse the cellular and epigenetic effects of interleukin-17 inhibitors in
使用右旋糖酐-胶原蛋白水凝胶开发 3D 打印皮肤模型,以分析白细胞介素 17 抑制剂的细胞和表观遗传效应
- 批准号:
2890513 - 财政年份:2027
- 资助金额:
$ 28.85万 - 项目类别:
Studentship
3D Printing Proteins for Continuous Flow Biocatalysis and Bioabsorbtion
用于连续流生物催化和生物吸收的 3D 打印蛋白质
- 批准号:
2753054 - 财政年份:2026
- 资助金额:
$ 28.85万 - 项目类别:
Studentship
3D printer for Additively Manufactured Electronics
用于增材制造电子产品的 3D 打印机
- 批准号:
539303076 - 财政年份:2024
- 资助金额:
$ 28.85万 - 项目类别:
Major Research Instrumentation
System for 3D femtosecond laser-based micromachining
基于飞秒激光的 3D 微加工系统
- 批准号:
537273289 - 财政年份:2024
- 资助金额:
$ 28.85万 - 项目类别:
Major Research Instrumentation
HoloSurge: Multimodal 3D Holographic tool and real-time Guidance System with point-of-care diagnostics for surgical planning and interventions on liver and pancreatic cancers
HoloSurge:多模态 3D 全息工具和实时指导系统,具有护理点诊断功能,可用于肝癌和胰腺癌的手术规划和干预
- 批准号:
10103131 - 财政年份:2024
- 资助金额:
$ 28.85万 - 项目类别:
EU-Funded
Optimisation of Buildable Structures for 3D Concrete Printing
3D 混凝土打印可建造结构的优化
- 批准号:
DP240101708 - 财政年份:2024
- 资助金额:
$ 28.85万 - 项目类别:
Discovery Projects
CMMI-EPSRC: Damage Tolerant 3D micro-architectured brittle materials
CMMI-EPSRC:耐损伤 3D 微结构脆性材料
- 批准号:
EP/Y032489/1 - 财政年份:2024
- 资助金额:
$ 28.85万 - 项目类别:
Research Grant
RII Track-4: NSF: Developing 3D Models of Live-Endothelial Cell Dynamics with Application Appropriate Validation
RII Track-4:NSF:开发活内皮细胞动力学的 3D 模型并进行适当的应用验证
- 批准号:
2327466 - 财政年份:2024
- 资助金额:
$ 28.85万 - 项目类别:
Standard Grant
STTR Phase II: Fabrication and Structural Testing of a 3D Concrete Printed Anchor for Floating Offshore Wind
STTR 第二阶段:用于浮动海上风电的 3D 混凝土打印锚的制造和结构测试
- 批准号:
2333306 - 财政年份:2024
- 资助金额:
$ 28.85万 - 项目类别:
Cooperative Agreement