Based on the present definition of thickness of bed layer and the formula for equilibrium sediment concentration at it, this paper also gives a calculation method for suspended load transport, and this method gives a satisfactory accuracy in verification.

Based on the relationship between energy and flow within the bed-surface layer,a relationship between the bedload sediment transport rate and effective stream power within the bed-surface layer is derived.

The measured data show that the bedload sediment transport rate is related more closely to the effective stream power within the bed-surface layer than to the river stream power.

According to the stochastic\|mechanistic properties of solid phase\|bedload, a differential equation governing the motion of bedload is strictly developed by an analogous approach to derive the Boltzmann equation in the kinetic theory of molecules. The collision term in the equation is involved mainly with the effect of collision between particles in the bedload layer and particles on the bed\|surface.

The results of experimental study are presented and mathematical models are proposed for heat and mass-transfer coefficients in a packed bed layer of reacting particles immersed in a liquid through which the reaction products are bubbled.

The results of experimental study are presented and mathematical models are proposed for heatand mass-transfer coefficients in a packed bed layer of reacting particles immersed in a liquid through which the reaction products are bubbled.

This paper briefly introduces the development of vibrating fluidized bed at home and abroad, elaborates the vibration properties of vibrating fluidized bed, the fluidizing velocity and pressure drop of the bed layer.

With few exceptions, PCs lie atop an astrocytic bed layer and glial processes are apposed to the various aspects of the PC body left free by the afferent axons.

At these times, SPM concentrations in a thin, near-bed layer were >amp;gt;60 g I-1 in the turbidity maximum region of the Ouse and >amp;gt;30 g 1-1 in the upper Humber (where channel volumes were much greater).

In this paper two dimensional turbulence time averaged structure in open channel and vertical distribution of suspended sediment concentration are studied. The results show that the turbulence diffusion coefficient is increased from the bed to the water surface, and reaches the maximum at the water surface. The distribution of suspended sediment obtained is similar to the distribution of vertical turbulence intensity measured in practice...

In this paper two dimensional turbulence time averaged structure in open channel and vertical distribution of suspended sediment concentration are studied. The results show that the turbulence diffusion coefficient is increased from the bed to the water surface, and reaches the maximum at the water surface. The distribution of suspended sediment obtained is similar to the distribution of vertical turbulence intensity measured in practice in recent years. The maximum value is located near the bed layer, and decreases to zero quickly to the bed surface . It decreases from the bed layer to the water surface, but is not equal to zero at the water surface. The vertical suspension index is a variable.

In this paper,the movement states of particles on the surface layer of river bed including at rest,in bed load transport and in suspension and their critical conditions for transform are described.The probabilities of four states consisting of probabilities of four basic transforms and four states are presented.The probabilities of four basic transforms are calculated and their characteristics are analyzed according to the numerical results.As a result,the of probabilities of states are obtained and used to...

In this paper,the movement states of particles on the surface layer of river bed including at rest,in bed load transport and in suspension and their critical conditions for transform are described.The probabilities of four states consisting of probabilities of four basic transforms and four states are presented.The probabilities of four basic transforms are calculated and their characteristics are analyzed according to the numerical results.As a result,the of probabilities of states are obtained and used to deduce the formula for calculate the ratio of bed load to suspended load.

Based on the “saltation\|diffusion” concept for sand grain motion in air,an experimental study is carried out on the longitudinal profiles for sand falling flux after certain cross\|section.The profiles were found to be determined by three key parameters such as sand falling flux at reference cross\|section,averaged maximum saltation length for sand grains and the “saltaion\|diffusion” index.An approximated relation was used,which could describe the experimental results satisfactorily.Longitudinal flux profiles...

Based on the “saltation\|diffusion” concept for sand grain motion in air,an experimental study is carried out on the longitudinal profiles for sand falling flux after certain cross\|section.The profiles were found to be determined by three key parameters such as sand falling flux at reference cross\|section,averaged maximum saltation length for sand grains and the “saltaion\|diffusion” index.An approximated relation was used,which could describe the experimental results satisfactorily.Longitudinal flux profiles were measured by means of horizontal array trap for a variety of air flow velocities and sand grain sizes.It was found that the averaged maximum saltation length for sand grains increases with increasing airflow shear velocity and sand grain size,whilst “saltation\|diffusion” index varies in the reverse trend.