Thermal properties of soils

دسته بندی: زمين شناسي
ویرایش:  
نویسندگان: Farouki O.T.  
سری:  
 
ناشر:  
سال نشر:  
تعداد صفحات: 150 
زبان: English 
فرمت فایل : DJVU (درصورت درخواست کاربر به PDF، EPUB یا AZW3 تبدیل می شود) 
حجم فایل: 2 مگابایت 

قیمت کتاب (تومان) : 59,000

هانوفر، نیوهمپشایر: سپاه مهندسین ارتش ایالات متحده، آزمایشگاه تحقیقاتی و مهندسی مناطق سردسیر. – 1981. – 150 p. Monographyya Теплофизические свойства грунтов مقدمه
خواص حرارتی خاک و خاک
اهمیت خواص حرارتی خاک
محدوده و هدف این مقاله،

Hanover, New Hampshire: US Army corps of engineers, Cold regions research and engineering laboratory. – 1981. – 150 p. Монография Теплофизические свойства грунтов Introduction
Soil and soil thermal properties
Importance of soil thermal properties
Scope and purpose of this monograph, Mechanisms of heat transfer in soils
Heat conduction
Convection
Radiation
Evaporation-condensation process
Other effects on soil heat transfer The effect of compositional, volumetric and other structural factors on the thermal properties of soils
Composition and other structural factors
Effect of the volumetric ratios of the constituents
Correlations between thermal conductivity and soil density or porosity
Effects of porosity and density on other thermal properties The effect of water and its migration on the thermal properties of soils
Properties of water in soils and the influence of temperature
The effects of the amount and nature of water
Combined moisture and heat transfer in soils caused by temperature gradients
Combined moisture and heat transfer during soil freezing Further influences on the thermal properties of soils
Properties of soil components influencing thermal behavior plus the effect of temperature
Effects of temperature on thermal properties of soils
Effects of ions, salts and other solutes on soil thermal properties
Effects of additives
Hysteresis and history
Organic factors
Direction of heat flow
Convectional effects Measurement of thermal properties of soils
Steady state methods
Transient methods
Comparison of results from probe and GHP tests Methods for calculating the thermal conductivity of soils
Parallel or series flow equations and the geometric mean
Smith's method for dry soils
Kersten's empirical equations
Mickley's method
Gemant's method
De Vries' method
The empirical equations of Van Rooyen and Winterkorn
The method of Kunii and Smith
The modified resistor equation
McGaw's conductance equation
Johansen's method
Trends shown by the various methods
Evaluation of the methods Discussion and conclusions
The condition of water in soils
The degree of saturation
Effect of increase in temperature above 0°C
Moisture and heat transfer
Effects of ions and salts
Additives, contacts and interfacial effects
Frozen soil factors
Factors in measurements of thermal conductivity
Applicability of the thermal conductivity methods
Suggestions for further research