An Introduction to Freeze/Thaw in Soils: One Dimensional Linear Heat Flow PDF Download
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Author: J. Paul Guyer, P.E., R.A.
Publisher: Guyer Partners
ISBN:
Category :
Languages : en
Pages : 72
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Book Description
Introductory technical guidance for civil and geotechnical engineers interested in freeze/thaw conditions in soil. Here is what is discussed: 1. GENERAL 2. DEFINITIONS AND THERMAL PROPERTIES 3. ONE-DIMENSIONAL LINEAR AND PERIODIC HEAT FLOW 4. ABBREVIATIONS 5. BIBLIOGRAPHY.
Author: J. Paul Guyer, P.E., R.A.
Publisher: Guyer Partners
ISBN:
Category :
Languages : en
Pages : 72
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Book Description
Introductory technical guidance for civil and geotechnical engineers interested in freeze/thaw conditions in soil. Here is what is discussed: 1. GENERAL 2. DEFINITIONS AND THERMAL PROPERTIES 3. ONE-DIMENSIONAL LINEAR AND PERIODIC HEAT FLOW 4. ABBREVIATIONS 5. BIBLIOGRAPHY.
Author: J. Paul Guyer
Publisher: CreateSpace
ISBN: 9781500699857
Category : Technology & Engineering
Languages : en
Pages : 68
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Book Description
This publication provides an introduction to freezing and thawing of soils in arctic and subarctic regions.
Author: J. Paul Guyer
Publisher: Guyer Partners
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 79
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Book Description
Introductory technical guidance for civil engineers, geotechnical engineers and other professional engineers and construction managers interested in freeze/thaw conditions in soil in cold regions. Here is what is discussed: 1. GENERAL, 2. DEFINITIONS AND THERMAL PROPERTIES, 3. ONE-DIMENSIONAL LINEAR AND PERIODIC HEAT FLOW, 4. ABBREVIATIONS, 5. BIBLIOGRAPHY.
Author: J. Paul Guyer
Publisher: Independently Published
ISBN: 9781720058540
Category : Architecture
Languages : en
Pages : 150
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Book Description
This publication provides professional engineers, architects and construction managers with over 275 pages of technical guidance for the design and construction of buildings and related infrastructure in cold regions. Here is what is discussed: 1. FOUNDATIONS IN AREAS OF SIGNIFICANT FROST PENETRATION, 2. FREEZE/THAW IN SOILS: ONE DIMENSIONAL LINEAR HEAT FLOW, 3. FREEZE/THAW IN SOILS: TWO DIMENSIONAL RADIAL HEAT FLOW, 4. PAVEMENT DESIGN IN SEASONAL FROST CONDITIONS, 5. ROAD DESIGN FOR COLD REGIONS, 6. UTILIDORS, 7. WASTEWATER COLLECTION AND TREATMENT, 8. WATER DISTRIBUTION.
Author: V. E. Romanovsky
Publisher:
ISBN:
Category :
Languages : en
Pages : 6
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Book Description
Mathematical modeling of perennial freeze and thaw is used in geocryology to solve both scientific and engineering problems. The surface temperature of a substrate is given as either a constant (stationary problem) or a function with a fixed period of fluctuation (periodic problem). In this paper a numerical permafrost model is developed for the southern Siberia region to study the influence of rhythmic climate change on the dynamics of permafrost. The mathematical model is represented as a two-dimensional heat conduction problem for a moist substrate with the latent heat effect for complex geological structures. This model takes into account a complex periodic temperature change at the soil surface and a stable heat flow at the lower and lateral boundaries for a steady domain. The enthalpy method to arrive at a numerical solution for this problem is used. It has been realized as a fully implicit local one-dimensional finite-difference scheme on an irregular grid. The calculations of the dynamics of temperature fields and permafrost boundaries are discussed to evaluate this scheme for the southern permafrost region of Eastern Siberia. The modeled results show that transects of temperature fields along some profiles (particularly at sites with complex geological structures) contain more information about permafrost dynamics than do ground temperature profiles from isolated boreholes.
Author: United States. Department of the Army
Publisher:
ISBN:
Category : Cold regions
Languages : en
Pages : 96
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Book Description
Author: MD Montasir Islam
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Frozen soil has a major effect in many hydrologic processes, and its impacts are difficult to predict. A prime example is flood forecasting during spring snowmelt within the Canadian Prairies. One key driver for the extent of flooding is the antecedent soil moisture and the possibility for water to infiltrate into (partly) frozen soils. Therefore, these situations are crucial for accurate flood prediction at every spring. The main objective of this study was to evaluate the water flow and heat transport within available hydrological models to predict the impact of frozen and partly frozen soil on infiltration and percolation. A standardized data set was developed for water flow and heat transport into (partial) frozen soil by laboratory experiments using fine sand within a one-dimensional (1-D) soil column. A 1-D soil column having a length of 107 cm and diameter of 35.6 cm was built and equipped with insulation to limit heat exchange only through the soil surface. A data logger collected the moisture content and temperature by five FDR sensors which have been installed at a distance of 15 cm from each other. During the experiments, temperature, soil moisture, and percolated water was observed at different freezing conditions (-5°C, -10°C, and -15°C) as well as at thawing conditions when the air temperature was increased to +5°C. Distribution of soil moisture and soil temperature in the soil column was plotted for the experimental data over the freezing and thawing period. As some of the water in the soil begins to freeze, a decrease in water content was observed with a sudden increase in soil temperature near 0°C or slightly below of 0°C. This was, in fact, only a decrease in unfrozen water, not a decrease in total water content and was caused by the latent heat during freezing. Soil temperature showed noticeable differences at the top and the bottom of soil column during the change of state of water. The heat flux at the lower soil column was strongly limited due to iii the overlying soil. Thus, the soil temperature at the lowest sensors stayed in a freezing condition over several days and was not changing the temperature due to the latent heat which was released during the freezing process. Significant variation in soil moisture content was found between the top and the bottom of the soil column at the starting of the thawing period. However, with increasing temperature, the lower depth of the soil column showed higher moisture content as the soil was enriched with moisture with higher transmission rate due to the release of heat by soil particles during the thawing cycle. The soil system did not remain in the isothermal state during the thawing cycle. Although gravitational gradient was mainly responsible for the infiltration rate into the partially frozen soil, the distribution of moisture was greatly influenced by the temperature gradient. Vadose zone modeling using HYDRUS-1D was applied to the data set. Numerical results of the modeling were calibrated using the experimental results. It showed that the newly developed benchmark data set were useful for the validation of numerical models. The use of such a validated freezing and thawing module implemented into larger scale hydrologic models will directly reduce the prediction uncertainty during flood forecasting. Moreover, these benchmark data sets will be useful for the validation of numerical models and for developing scientific knowledge to suggest potential code variations or new code development in numerical models.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 100
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Book Description
Author:
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 1204
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Book Description
![Permafrost: North American Contribution [to The] Second International Conference PDF](https://books.google.com/books/content/images/frontcover/M4SvF9Qax7EC?fife=w80-h100)
Author:
Publisher: National Academies
ISBN: 9780309021159
Category : Frozen ground
Languages : en
Pages : 808
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Book Description
