Results 11 to 20 of about 35,746 (178)

Research on Frost Heaving Characteristics of Hydraulic Tunnels’ Wall Rock in Cold Regions Based on Phase Transition and Water-Heat-Stress Coupling

open access: yesBuildings, 2022
In order to study the problem of frost damage to wall rock caused by hydraulic tunnels’ phase transition between water and ice at low temperatures in cold regions, a three-field coupling governing equation considering temperature, seepage and stress was ...
Haibo Jiang   +3 more
doaj   +1 more source

Numerical Investigation of Pool Boiling Under Ocean Conditions with Lattice Boltzmann Simulation. Part Ⅰ: Heaving Condition

open access: yesFrontiers in Energy Research, 2021
Pool boiling is the heat-transfer mechanism of many heat exchangers inside ocean nuclear power plants working under the complex marine circumstances.
Qifan Zou   +4 more
doaj   +1 more source

Stability of Underwater Periodic Locomotion [PDF]

open access: yes, 2013
Most aquatic vertebrates swim by lateral flapping of their bodies and caudal fins. While much effort has been devoted to understanding the flapping kinematics and its influence on the swimming efficiency, little is known about the stability (or lack of ...
Jing, Fangxu, Kanso, Eva
core   +1 more source

Evolution Patterns of Frost-Heaving Pressure with Partial Ponding in Cold Region Tunnels

open access: yesGeofluids, 2022
The calculation of the frost-heaving pressure is one of the key issues in the frost-resistant design of tunnels in cold regions. To reveal the frost heave mechanism of partial ponding behind the tunnel linings, a three-dimensional geo-mechanical model ...
Xinyu Zheng   +4 more
doaj   +1 more source

Study of the influence of chemical anti-icing materials on frost heaving of the roadbed soils [PDF]

open access: yesE3S Web of Conferences, 2020
This work examines the influence of chemical anti-icing materials on the frost resistance of the road pavement. Methods and technologies for introducing salt additives into the soil are considered.
Velsovskij A. Y.   +2 more
doaj   +1 more source

Nonlinear Modeling and Verification of a Heaving Point Absorber for Wave Energy Conversion [PDF]

open access: yes, 2017
Although the heaving Point Absorber (PA) concept is well known in wave energy conversion research, few studies focus on appropriate modelling of non-linear fluid viscous and mechanical friction dynamics.
Gilbert, James   +4 more
core   +1 more source

Nonlinear vibration behaviors of marine rotor system coupled with floating raft-airbag-displacement restrictor under ship heaving motion

open access: yesAdvances in Mechanical Engineering, 2021
To study the nonlinear vibration behaviors of rotor system coupled with floating raft-airbag-displacement restrictor under ship heaving motion, the dynamic model is established considering the effect of heaving motion, its steady-state responses are ...
Xuan Xie, Ming Li, Junwei Wang
doaj   +1 more source

Hydromechanics of swimming propulsion. Part 2. Some optimum shape problems [PDF]

open access: yes, 1971
The optimum shape problems considered in this part are for those profiles of a two-dimensional flexible plate in time-harmonic motion that will minimize the energy loss under the condition of fixed thrust and possibly also under other isoperimetric ...
Wu, T. Yao-Tsu
core   +1 more source

Measurement of Suction Pressure Generated in the Process of Frost Heaving in Rock

open access: yesJournal of MMIJ, 2017
Recently it has been found that frost heave phenomena can be seen not also in soil but also in rock. It is obvious, however, that the number of researches on frost heaving in rock is much less than that of researches on frost heaving in soil.
Dai NAKAMURA   +5 more
doaj   +1 more source

Research on the Temperature Field and Frost Heaving Law of Massive Freezing Engineering in Coastal Strata

open access: yesAdvances in Materials Science and Engineering, 2021
In this study, based on the background of massive freezing engineering in coastal strata, the thermal physical parameters and some freezing laws of soil were obtained through soil thermal physical tests and frozen soil frost heaving tests.
Chaochao Zhang   +12 more
doaj   +1 more source

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