The eddy covariance method is an important technique for investigating energy and substance exchange between the atmosphere and the ecosystem; however,an inappropriate average period causes inaccurate
Saint-Venant equations are accurately solved by full implicit solution,and a numerical model for furrow water flow is proposed with unconditional stability.
For alluvial cohesionless soils,constitutive model parameters cant be determined accurately by laboratory tests on remolded samples for strong and complex structure in the field,and it is difficult an