Tool design, chip breaker design, collocation of guiding strips, determination of gaps between them, improvement of cutting fluid characteristics, flow pressure control in DF system and reasonable selection of cutting conditions for fine machining large and deep blind holes in TC4 titanium alloy are studied and the test results are presented in this paper.

And the strategy to identify flow network is studied in four sorts ─ series, parallel, branch and mixing, then calculate the flow and pressure by two-tier approach.

This paper studies through the experiment of the electrical ball valve,analyzes the characteristic relation between the flow and pressure of the regulating valve,gives the changing rule of the ball valve's flow regulating intensity with the relative jaw opening.

Based on the principle of the hydraulic system of signal producer controlled by on-off pilot valve, and according to the different working characteristic of three phases,using the liquid flow and pressure characteristic of valve, the dynamic equilibrium equations for flow flux of every subsystem are established;

For calculation of flow network in process simulation, the topology structure for flow network was described as an adjacency matrix and the strategy to identify flow network was studied with four sorts-series, parallel, branch and mixing, to put forward the algorithm for auto modeling and calculation of flow and pressure.

Using the above research, this paper puts forward the algorithm for auto-modeling and calculating for flow and pressure. A set of application software has been developed successfully.

It can be seen from the range R value that the primary and secondary order of the 4 factors that influence the rate of the oleoresin ginger extraction by supercritical CO2 is A>B>C>D (the extraction pressure>the extraction temperature> the extraction time >the flow rate of CO2). The pressure has the greatest influence on extracting oleoresin ginger by supercritical CO2.

Based on the freedom discharge test, the results showed that the classical model of relation between flux rate and pressure could totally fit for the pressure range from 0.5 m to 15.0 m.

Vapor condensation and the effect on this process of two factors: relative motion and the external influence of the carrier flow (pressure perturbation) are investigated.

At low Reynolds numbers, the variation of the gas-flow pressure drop through the filters is determined by the gas viscosity.

An empirical correlation for two-phase flow pressure drops caused by the sudden contraction was developed based on the proposed contraction loss coefficients correlation for single-phase flow and Martinelli factor.

As the system requires neither a manometer nor an excess pressure safety valve, pressures in the nasopharynx were recorded at various jet flows to illustrate the flow/pressure relationship.

The CPAP can easily be etablished at definite pressures by simple adjustment of the jet flow, using this flow/pressure curve.

An experimental investigation was made into the flow and pressure pulsations in cylindrical cavities open toward a supersonic flow and set up at zero angle of attack (i.e., the cavity axis and the direction of the flow coincide).

Post-conditioning reduces infarct size in the isolated rat heart: Role of coronary flow and pressure and the nitric oxide/cGMP p

Independent control of flow and pressure allowed enhanced resolution, particularly at higher molecular weights, over previous separations.

On the basis of flow and pressure measurements, it is shown that PEEP-valves of the servoventilator offer a considerable flow resistance to the expiration of the patient.

Breath-by-breath respiratory mechanics data and the automated variables obtained with the new monitor were compared with flow and pressure reference data.?Results: Waveform data comparison showed errors of less than 5 % for most variables.

All these vary with many factors such as fluid pressure, oil saturation, fissure configuration and wettability, and these factors affect each other.

The results show that the relation between the fluid pressure and volume of flow is a complex segmenting correlation, instead of a simple positive correlation like the pipe flow that follows Darcy's law.

The relation between fluid pressure and the speed of flow also follows the same correlation.

Calculating fluid pressure on piston with constant expansion rate

We consider the problem of the expansion at a constant rate of a planar, cylindrical, or spherical piston in a compressible fluid and calculate the fluid pressure on the piston as a function of its velocity.

Technological process, calculation and construction of equipments used in continuous hydrogenation of rosin are described. Main factors affecting hydrogenation of rosin-temperture, rate of flow and pressure have been investigated. The quality of the product can be compared with the same product pro duced by Hercules Co. of the United States.

This paper has analyzed the relationship of flow, pressure pulsation and noise in hydraulic system, and has inquired into generation and propagation of fluid noise in the system. It is suggested that a constraint equation should be added to an analysis of general theory of a filter. K-type and H-type filters are theoretically analyzed and tested. The results indicate that they are very effective on controlling pressure pulsation, and can also obviously restrain the noise.

A hydraulic pump is considered as a pressure and flow ripple source for the hydraulic system ,and its mathematical model in frequency domain is studied. First, a mathematical model in frequency domain for parallel axial piston pump is derived in detail. It is shown that , above model is equivalent to a parallel model of a source flow Qs and a source impedance Zs. Functional relation of Qs, Zs and some internal parameters in a pump is discussed.. Next) a theoretical method to compute Qs and a measuring-method...

A hydraulic pump is considered as a pressure and flow ripple source for the hydraulic system ,and its mathematical model in frequency domain is studied. First, a mathematical model in frequency domain for parallel axial piston pump is derived in detail. It is shown that , above model is equivalent to a parallel model of a source flow Qs and a source impedance Zs. Functional relation of Qs, Zs and some internal parameters in a pump is discussed.. Next) a theoretical method to compute Qs and a measuring-method of Zs by experiment are discussed. Finally , Qs and Zs of a specific pump-obtained by above methods is substituted in to hydraulic system simulation program in frequency domain , and some theoretical computation values of pressure ripple for specific-hydraulic system are obtained.-They are compared with experimental values; of pressure ripple in the same hydraulic system and the results are identical. It is shown that above model computing and measuring methods is rational.