权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Forced Convection Heat Transfer in Unconventional Geothermal Systems: Numerical Investigation of Complex Flow Processes near Magmatic Chambers

非常规地热系统中的强制对流换热：岩浆室附近复杂流动过程的数值研究

基本信息

批准号：
1878602
负责人：
金额：
--
依托单位：
CRANFIELD UNIVERSITY
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-1878602
关键词：
Forced Convection Heat Transfer Unconventional

项目摘要

Recent research into frontier Enhanced Geothermal Systems (EGS) has highlighted the need to better understand the associated heat exchange and fluid dynamics to converge between unconventional well designs and the definition of where their performance would be best. Whilst convection and mixing within magma chambers and hydrothermal circulation in natural groundwater systems have been extensively investigated, there is limited understanding of the heat transfer from magma to water, the behaviour of supercritical/superheated fluids and the convective forces triggered by stimulation and artificial injection near magmatic chambers. Convective heat transport is further modified by multiphase flow phenomena induced by phase change.Beginning with the fundamental differences between conduction- vs. convention-dominated geothermal systems, this PhD research will focus on the steady-state and transient heat transfer processes and fluid dynamics associated with free and forced convection near magmatic chambers.Different scenarios will be defined considering the various deep geothermal solutions that have already been implemented or proposed in the literature. Numerical tools will be used to reproduce the settings from different volcano sites, where relevant parameters will be extracted from the literature available in the public domain.The outcome of this PhD will contribute to re-evaluating the geothermal resource base worldwide and aims to improve the current understanding of heat transfer from magma to water under a combination of free and forced convection

最近对前沿增强型地热系统（EGS）的研究强调了更好地理解相关热交换和流体动力学的必要性，以便在非常规井设计和定义其性能最佳的位置之间进行融合。虽然对流和岩浆房内的混合和天然地下水系统中的热液循环已被广泛研究，有有限的了解从岩浆到水的热传递，超临界/过热流体的行为和对流力的刺激和人工注入附近的岩浆房触发。对流热传输被相变引起的多相流现象进一步修改。从传导与常规主导的地热系统之间的根本差异开始，这项博士研究将集中在稳定的-状态和瞬态热传递过程以及与岩浆室附近的自由对流和强制对流相关的流体动力学。考虑到各种深部地热解决方案，已经在文献中实施或提出。数值工具将被用来再现不同火山点的设置，相关参数将从公共领域的文献中提取。该博士学位的成果将有助于重新评估全球地热资源基础，旨在提高目前对自由对流和强制对流相结合下岩浆到水的热传递的理解