Numerical Solutions for a Rigid-Ice Model of Secondary Frost Heave
Frost heave is analyzed for the common case in which some ice penetrates the soil. In this situation, heave is due to the accumulation of soil-free ice just within the frozen zone, behind a frozen fringe of finite thickness. Heat and mass transport within and across that fringe are crucial processes...
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ftdtic:ADA115597 2023-05-15T16:37:26+02:00 Numerical Solutions for a Rigid-Ice Model of Secondary Frost Heave O'Neill,Kevin Miller,Robert D COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH 1982-04 text/html http://www.dtic.mil/docs/citations/ADA115597 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA115597 en eng http://www.dtic.mil/docs/citations/ADA115597 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Soil Mechanics Snow Ice and Permafrost *Frost heave Soils Freezing Ice Penetration Growth(General) Mathematical models Finite element analysis Computerized simulation Text 1982 ftdtic 2016-02-19T08:05:14Z Frost heave is analyzed for the common case in which some ice penetrates the soil. In this situation, heave is due to the accumulation of soil-free ice just within the frozen zone, behind a frozen fringe of finite thickness. Heat and mass transport within and across that fringe are crucial processes in the dynamics of heave. This analysis concentrates on activity within the fringe, also connecting that activity to heat and mass flows in the more frozen and unfrozen zones. Each component in a set of governing differential equations is developed from rational physics and thermodynamics, using previous experimental work. It is assumed that the soil ice grows through interconnected interstices; hence it constitutes and can move as a rigid body. When the assumption is translated into mathematical terms, it completes the governing equations. The model resulting from these considerations is a one-dimensional finite element computer program that solves the equations for arbitrary initial and boundary conditions. The model is used to simulate the heave history of a hypothetical soil column frozen unidirectionally and subjected to a surcharge. The results are gratifying in that they predict qualitatively the characteristics of numerous laboratory observations. Some questions about the completeness of the theory remain, and strict verification of the model awaits further experimentation and better parameter identification. Text Ice permafrost Defense Technical Information Center: DTIC Technical Reports database |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Soil Mechanics Snow Ice and Permafrost *Frost heave Soils Freezing Ice Penetration Growth(General) Mathematical models Finite element analysis Computerized simulation |
spellingShingle |
Soil Mechanics Snow Ice and Permafrost *Frost heave Soils Freezing Ice Penetration Growth(General) Mathematical models Finite element analysis Computerized simulation O'Neill,Kevin Miller,Robert D Numerical Solutions for a Rigid-Ice Model of Secondary Frost Heave |
topic_facet |
Soil Mechanics Snow Ice and Permafrost *Frost heave Soils Freezing Ice Penetration Growth(General) Mathematical models Finite element analysis Computerized simulation |
description |
Frost heave is analyzed for the common case in which some ice penetrates the soil. In this situation, heave is due to the accumulation of soil-free ice just within the frozen zone, behind a frozen fringe of finite thickness. Heat and mass transport within and across that fringe are crucial processes in the dynamics of heave. This analysis concentrates on activity within the fringe, also connecting that activity to heat and mass flows in the more frozen and unfrozen zones. Each component in a set of governing differential equations is developed from rational physics and thermodynamics, using previous experimental work. It is assumed that the soil ice grows through interconnected interstices; hence it constitutes and can move as a rigid body. When the assumption is translated into mathematical terms, it completes the governing equations. The model resulting from these considerations is a one-dimensional finite element computer program that solves the equations for arbitrary initial and boundary conditions. The model is used to simulate the heave history of a hypothetical soil column frozen unidirectionally and subjected to a surcharge. The results are gratifying in that they predict qualitatively the characteristics of numerous laboratory observations. Some questions about the completeness of the theory remain, and strict verification of the model awaits further experimentation and better parameter identification. |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH |
format |
Text |
author |
O'Neill,Kevin Miller,Robert D |
author_facet |
O'Neill,Kevin Miller,Robert D |
author_sort |
O'Neill,Kevin |
title |
Numerical Solutions for a Rigid-Ice Model of Secondary Frost Heave |
title_short |
Numerical Solutions for a Rigid-Ice Model of Secondary Frost Heave |
title_full |
Numerical Solutions for a Rigid-Ice Model of Secondary Frost Heave |
title_fullStr |
Numerical Solutions for a Rigid-Ice Model of Secondary Frost Heave |
title_full_unstemmed |
Numerical Solutions for a Rigid-Ice Model of Secondary Frost Heave |
title_sort |
numerical solutions for a rigid-ice model of secondary frost heave |
publishDate |
1982 |
url |
http://www.dtic.mil/docs/citations/ADA115597 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA115597 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA115597 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766027734790701056 |