One of the aspects that need to be considered in designing a submarine is effect hydrodynamic aspect on resistance and maneuverability various operating conditions. In certain conditions, submarines operate conditions near seabed. general, are designed submerge surface mode. However, under Only few papers or journals have discussed their mode Several methods such as numerical physical modeling ...

Wave energy has the advantages of high density, renewability, and wide distribution, been highly valued by many coastal countries. The wave conversion device can convert into electric energy, which is great significance for alleviating problems such as crisis greenhouse effect. traditional only gain along heave direction, kinetic buoy not fully utilized. To improve utilization efficiency device...

This study demonstrates the suitability of microfluidic structures for high throughput blood cell analysis. The microfluidic chips exploit fully integrated hydrodynamic focusing based on two different concepts: Two-stage cascade focusing and spin focusing (vortex) principle. The sample--A suspension of micro particles or blood cells--is injected into a sheath fluid streaming at a substantially ...

The kinematics model based on the Slender-Body theory is proposed from the bionic movement of real fish. The Panel method is applied to the hydrodynamic performance analysis innovatively, with the Gauss-Seidel method to solve the Navier-Stokes equations additionally, to evaluate the flexible deformation of fish in swimming accurately when satisfying the boundary conditions. A physical prototype...

Bacterial communities attached to surfaces under fluid flow represent a widespread lifestyle of the microbial world. Through shear stress generation and molecular transport regulation, hydrodynamics conveys effects that are very different by nature but strongly coupled. To decipher the influence of these levers on bacterial biofilms immersed in moving fluids, we quantitatively and simultaneousl...

New approach to classification of integrable hydrodynamic chains is established. Generating functions of conservation laws are classified by the method of hydrodynamic reductions. N parametric family of explicit hydrodynamic reductions allows to reconstruct corresponding hydrodynamic chains. Plenty new hydrodynamic chains are found.

nowadays distillation is recognized as one of the economical and the most trustable separation methods in chemical, petroleum, gas and petrochemical industries. it is almost used as a first and the most applicable choice in separation methods. in this article the effect of inlet downcomer on the hydrodynamics of industrial sieve tray has been elaborated. the study was carried out by using a 3-d...

Hydrodynamic behavior of aggregative fluidized beds has been studied and a model proposed for the prediction of different characteristics of fluidized beds. According to this model, a computer program is prepared and the hydrodynamic behavior of some industrial units has been simulated.

the seeds of lepidium sativum (garden cress) were selected as a new source of hydrocolloid and some of its fundamental physico-chemical properties such as intrinsic viscosity and functional group were determined. ftir analysis showed that this polymer was composed of carbohydrate with functional carboxyl and hydroxyl groups. intrinsic viscosity was determined to be 1.33 ml/mg in water. the hydr...

A well-known problem in low Reynolds number hydrodynamics 1) is to calculate the hydrodynamic interactions between spherical particles moving in a fluid, as its solution is necessary for understanding the properties of suspensions. While the first treatment of such hydrodynamic interactions dates from 1911 when Smoluchowski 2) analysed the hydrodynamic friction between two spherical particles, ...