Repulsion of an evolving surface on random walls
نویسندگان
چکیده
We consider the motion of a discrete random surface interacting by exclusion with a random wall. Two cases are considered: rarefied walls and walls of random height. The dynamics is given by the serial harness process. In the first case, we prove that the process delocalizes iff the mean number of visits to the set of sites where the wall is present by a random walk is infinite. When the surface delocalizes, bounds on its average speed are obtained. In the case of walls of random height, we study the effect of the distribution of the wall heights on the repulsion speed.
منابع مشابه
Repulsion of an evolving surface on walls with random heights
We consider the motion of a discrete random surface interacting by exclusion with a random wall. The heights of the wall at the sites of Z are i.i.d. random variables. Fixed the wall configuration, the dynamics is given by the serial harness process which is not allowed to go below the wall. We study the effect of the distribution of the wall heights on the repulsion speed.
متن کاملScale Effects on the Discharge Coefficient of Ogee Spillway with an Arc in Plan and Converging Training Walls
Dam spillways are the structures that lead rightly and safely the outflow downstream, so that the dam integrity can be guaranteed. Many accidents with dams have been caused by an inadequate spillway design or insufficient capacity. To accurately respond the hydraulic spillways, designers use physical modeling for designing this kind of structures. The scale effect in the spillway modeling, as a...
متن کاملEffect of Thermal Conductivity and Emissivity of Solid Walls on Time-Dependent Turbulent Conjugate Convective-Radiative Heat Transfer
In the present study, the conjugate turbulent free convection with the thermal surface radiation in a rectangular enclosure bounded by walls with different thermophysical characteristics in the presence of a local heater is numerically studied. The effects of surface emissivity and wall materials on the air flow and the heat transfer characteristics are the main focus of the present investigati...
متن کاملProbabilistic Assessment of Pseudo-Static Design of Gravity-Type Quay Walls
Failure of the quay walls due to earthquakes results in severe economic loss. Because of hazards threatening such inexpensive nodes of national and international transportation networks, seismic design of quay walls is still an evolving topic in marine structural engineering. This study investigates the sensitivity of the gravity-type quay wall stability respect to uncertain soil and seismic pr...
متن کاملA comparative study on details of green walls in different climates
Global warming has today turned to one of the most important environmental issues due tooveruse of fossil fuels, and it needs serious attention. Since the mid-1970s, an urgent needwas therefore felt around the world to reduce the use of energy for heating and cooling inbuildings. Using green covers, especially green facades, in appropriate environmentalconditions can be regarded as a method to ...
متن کامل