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Sunday, July 19, 2020 | History

2 edition of Numerical modeling of ice deposition found in the catalog.

Numerical modeling of ice deposition

Lloyd Randall Koenig

Numerical modeling of ice deposition

by Lloyd Randall Koenig

  • 92 Want to read
  • 14 Currently reading

Published by Rand Corp. in Santa Monica, Calif .
Written in English

    Subjects:
  • Ice crystals -- Growth -- Mathematical models.

  • Edition Notes

    Bibliography: p. 35-36.

    Statement[by] L. R. Koenig.
    SeriesThe Rand Corporation. Memorandum RM-5715-NSF
    Classifications
    LC ClassificationsQ180.A1 R36 no. 5715, QC929.S7 R36 no. 5715
    The Physical Object
    Paginationxiii, 36 p.
    Number of Pages36
    ID Numbers
    Open LibraryOL5234062M
    LC Control Number75304476

    Abstract. Proceedings of the Third International Conference on Discrete Element Methods, held in Santa Fe, New Mexico on September , This Geotechnical Special Publication contains 72 technical papers on discrete element methods (DEM), a suite of numerical techniques developed to model granular materials, rock, and other discontinua at the grain scale. During the past 50 years, a large number of technical papers and reports have been devoted to NWP, but the number of textbooks dealing with the subject has been very small, the latest being the book by Haltiner & Williams, which was dedicated to descriptions of the atmospheric dynamics and numerical methods for atmospheric modeling.

    Therefore, the numerical model's sensitivity for particle size was researched by Forsyth et al. 12 In this research, the discrete random walk (DRW) model and continuous random walk (CRW) model were compared in the number simulation of the deposition in the gas turbine engines. The results showed that the CRW model was more sensitive than the. Ice adhesion and accretion on power lines is a severe problem that can pose a threat to the electric power transmission, and this icing phenomenon is significantly related to the.

      Topography of the Arsia and Pavonis FSDs. a A true color image mosaic from Viking data of the western hemisphere of Mars.b Detailed elevation (colored regions) of the FSDs (outlined with black/white dotted line) indicate rougher topography within the FSDs and presence of volcanic rifts at Arsia. White line with labeled distances gives the location of the flowline used in numerical model.   In this chapter, numerical modeling of transport phenomena in fusion-based AM processes will be presented, using the laser metal deposition process as an example. Coaxial laser deposition systems with blown powder as shown in Fig. 1 are considered for simulations and experiments. The material studied is Ti-6Al-4V for both the substrate and powder.


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Numerical modeling of ice deposition by Lloyd Randall Koenig Download PDF EPUB FB2

A method of computing the rate of growth of ice crystals by deposition is described. Predictions of growth characteristics over the temperature range of −1 through −35C are shown and compared with meager experimental data available within this temperature by: Get this from a library. Numerical modeling of ice deposition.

[Lloyd Randall Koenig; Rand Corporation.]. Abstract A method of computing the rate of growth of ice crystals by deposition is described.

Predictions of growth characteristics over the temperature range of −1 through −35C are shown and compa Cited by:   Numerical Modeling of Ice Deposition. Koenig, L. Abstract. A method of computing the rate of growth of ice crystals by deposition is described.

Predictions of growth characteristics over the temperature range of 1 through 35C are shown and compared with meager experimental data available within this temperature growth rate Cited by:   2. Ice numerical model description. In order to simulate the ice behavior under high strain rates, a constitutive equation based on the Drucker and Prager () model has been proposed.

Material modeling Hypoelastic approach. The motion of a deformable body can be described through the deformation gradient tensor by: A numerical simulation model that simulates the behaviour of a vessel moored in broken ice has been used to compare results from numerical simulations with ice tank tests.

Request PDF | Numerical models of sea ice biogeochemistry | The need to understand how the ongoing rapid sea-ice changes affect marine biogeochemistry and ecosystems fosters the development of.

In geology, numerical modeling is a widely applied technique to tackle complex geological problems by computational simulation of geological scenarios. Numerical modeling uses mathematical models to describe the physical conditions of geological scenarios using numbers and equations.

Nevertheless, some of their equations are difficult to solve directly, such as partial differential equations. Langmann, B. Interactive numerical modeling of the atmospheric water cycle and volcanic ash aggregation. In 2nd IUGG-WMO workshop on Ash dispersal forecast and civil aviation, World Meteorological Organization: Book of Abstracts (pp.

81). The influence of sea ice on the hydrodynamics, sediment resuspension, and suspended sediment concentration (SSC) in the coastal area of Qinhuangdao was systematically investigated using day in situ measurements at two stations (with ice at station M1 and without ice at station M2) in the Bohai Sea in the winter of   Substantial improvement was obtained in the leak detection sensitivity for a greater impoundment resistivity.

The numerical results indicate that 90 percent of leaks in the geomembrane liner can be effectively detected and accurately located for the 3D finite element model of a geomembrane lined earth-rock dam.

Toshihiro Kitada, Pius C.S. Lee, Hiromasa Ueda, Numerical modeling of long-range transport of acidic species in association with meso-β- convective-clouds across the Japan sea resulting in acid snow over coastal Japan—I. model description and qualitative verifications, Atmospheric Environment.

Here, an updated and detailed set of deposition maps is provided based on a deep-source plume model (Schmidt et al., ), for the eight ice-particle jets identified in Spitale and Porco (), the updated set of jets proposed in Porco et al. (), and a contrasting curtain-style plume proposed in.

[1] A numerical model has been developed to predict the evolution and degree of incision and deposition by fluvial channels on the continental shelf during sea level cycles.

Rainfall‐runoff, mass wasting processes, and fluvial sediment entrainment and transport are simulated using the detachment‐limited model of Howard [] on a grid that represents the morphology of the. results [12]. The adsorption capacity of ice was estimated thermodynamic values as Henry’s constant [13] and Langmuir’s constant [14] are in a good agreement with the literature for the chosen experimental conditions.

Conclusion. The implemented numerical methods for simulation of combined mass transfer can be efficiently applied for study of atmospheric processes. The book examines the processes of erosion, transportation, and deposition of sediment particles under gravity, flowing water, waves, and wind.

Chapters also cover rare phenomena and topics such as hyperconcentrated flows, effect of sediment existence on water flow, large-scale hydraulic construction on sediment-laden streams, and.

Learn ice deposition by with free interactive flashcards. Choose from different sets of ice deposition by flashcards on Quizlet. should also depend the speed of the object.

The simplest friction model is v. Adding this frictional force, the complete model becomes dv dt = g v; () where is the frictional coefficient, which may depend on other physical parameters, for instance, the surface area of the object.

Numerical Modeling of Asphaltene Deposition along Wellbore [Saeid Dowlati] on *FREE* shipping on qualifying offers.

Asphaltene deposition is one of the major production problems during the life of a well. It can reduce well flow rate or cease the production totally.

Prediction of asphaltene deposition profile along wellbore can identify most probable region of deposition. Derived from laser cladding, the direct laser metal deposition (DLMD) process is based upon a laser beam–powder–melt pool interaction and enables the manufacturing of complex 3D shapes much faster than conventional processes.

However, the surface finish remains critical, and DLMD parts usually necessitate postmachining steps. Within this context, the focus of our work is to improve the.

Assessing the ability of numerical ice sheet models to simulate grounding recommended for its intended purposes as a text for a rigorous course of study in air pollution meteorology and modeling. The book is also sufficiently comprehensive that it will serve as a useful reference for both atmospheric chemistry and dynamics.To establish the effective construction scheme of the earth-sand mound by using barges, the main objective of the present study is to develop a numerical simulation model of the spatial deposition configuration of earth and sand dumped from barge by taking the .Wax deposition in subsea pipelines is a significant economic issue in the petroleum industry.

A mathematical model has been developed to predict the increase in both the deposit thickness and the wax fraction of the deposit using a fundamental analysis of the heat and mass transfer for laminar and turbulent flow conditions.