The management of the operating benefits of highland barley growers and growers will gradually increase the per capita production economic benefits and labor income of each highland barley grower and grower in the hig...The management of the operating benefits of highland barley growers and growers will gradually increase the per capita production economic benefits and labor income of each highland barley grower and grower in the high and cold plateau region of Tibet in an orderly and efficient manner,and will boost the industrialization and large-scale healthy development of highland barley production and planting in the region,thus effectively driving the sound and healthy economic development of the local farmers.展开更多
The purpose of this study is to understand the factor that influence the heating efficiency of the outward and inward multi-hole gas burner. The flame-hole angle and the distance from flame hole to heating object are ...The purpose of this study is to understand the factor that influence the heating efficiency of the outward and inward multi-hole gas burner. The flame-hole angle and the distance from flame hole to heating object are chosen as the experimental parameters. The measurement of the flame temperature distribution is carried out on each experimental condition. The observation of combustion flame, by the Schlieren method, is done from the purpose to understand the combustion phenomenon on the heating efficiency. LPG (Liquefied petroleum gas) is used for the test fuel gas. The compositions of LPG are propane 97.5vol%, butane 0.2vol% and methane + ethylene 2.3vol%. The optimum ranges of the flame-hole angle and the distance from flame hole to heating object are clarified. The experimental correlation equations for the outward and inward multi-flame-hole gas burner are proposed.展开更多
In many applications,such as plasma edge simulation of a nuclear fusion reactor,a coupled PDE/kinetic description is required.Such systems can be solved with a coupled finite-volume/Monte-Carlo method.Different proced...In many applications,such as plasma edge simulation of a nuclear fusion reactor,a coupled PDE/kinetic description is required.Such systems can be solved with a coupled finite-volume/Monte-Carlo method.Different procedures have been proposed to estimate the source terms in the finite volume part that appear from the Monte Carlo part of the simulation.In this series of papers,we present a systematic(analytical and numerical)comparison of the variance and computational cost of a coherent set of such estimation procedures.The comparison is based on an invariant imbedding procedure,in which systems of ordinary differential equations(ODEs)are derived that quantify the statistical error and computational cost of each estimator.In this paper,we discuss analog and collision simulation and estimation procedures.We analyze in detail a scenario with forward-backward scattering in a one-dimensional slab,uncovering and quantifying the effects determining the performance of the estimation procedures.展开更多
文摘The management of the operating benefits of highland barley growers and growers will gradually increase the per capita production economic benefits and labor income of each highland barley grower and grower in the high and cold plateau region of Tibet in an orderly and efficient manner,and will boost the industrialization and large-scale healthy development of highland barley production and planting in the region,thus effectively driving the sound and healthy economic development of the local farmers.
文摘The purpose of this study is to understand the factor that influence the heating efficiency of the outward and inward multi-hole gas burner. The flame-hole angle and the distance from flame hole to heating object are chosen as the experimental parameters. The measurement of the flame temperature distribution is carried out on each experimental condition. The observation of combustion flame, by the Schlieren method, is done from the purpose to understand the combustion phenomenon on the heating efficiency. LPG (Liquefied petroleum gas) is used for the test fuel gas. The compositions of LPG are propane 97.5vol%, butane 0.2vol% and methane + ethylene 2.3vol%. The optimum ranges of the flame-hole angle and the distance from flame hole to heating object are clarified. The experimental correlation equations for the outward and inward multi-flame-hole gas burner are proposed.
基金funding from the Euratom research and training programme under grant agreements No.633053 and No.101052200supported by the Research Foundation Flanders(FWO)under project grant G078316N+2 种基金funded by a PhD fellowship of the Research Foundation Flanders(FWO)funded by the Research Foundation-Flanders(FWO)the Flemish Government-department EWI.
文摘In many applications,such as plasma edge simulation of a nuclear fusion reactor,a coupled PDE/kinetic description is required.Such systems can be solved with a coupled finite-volume/Monte-Carlo method.Different procedures have been proposed to estimate the source terms in the finite volume part that appear from the Monte Carlo part of the simulation.In this series of papers,we present a systematic(analytical and numerical)comparison of the variance and computational cost of a coherent set of such estimation procedures.The comparison is based on an invariant imbedding procedure,in which systems of ordinary differential equations(ODEs)are derived that quantify the statistical error and computational cost of each estimator.In this paper,we discuss analog and collision simulation and estimation procedures.We analyze in detail a scenario with forward-backward scattering in a one-dimensional slab,uncovering and quantifying the effects determining the performance of the estimation procedures.
