Effects of operating pressure

This study analyzes the quarter car braking model to determine the effect of the wheel slip ratio (λ) on the friction coefficient (µ) during the braking of the car. The results of braking distance, deceleration, and brake pressure are considered and analyzed to select a suitable braking system for the operating conditions of the designed truck.

7p viwhitewolf 11-07-2023 5 4   Download

This paper investigates the effects of recirculation channel on the performance of a single-stage transonic axial compressor, NASA Stage 37, such as pressure ratio, adiabatic efficiency, and operating range. Numerical analysis was conducted by solving three-dimensional steady Reynolds-averaged Navier-Stokes equations with the k-epsilon turbulence model.

6p vimelindagates 18-07-2022 5 2   Download

Increased central venous pressure secondary to an increase in intraabdominal pressure has been reported during laparoscopic surgery. However, no study has yet determined the effect of pneumoperitoneum on cross-sectional area (CSA) of central veins by ultrasonography during laparoscopic cholecystectomy.

6p viottohahn 30-03-2022 8 1   Download

The 2D symmetric model of EPR with the electromagnetic force calculated was imported into Simplorer software to simulate the dynamic response of the EPR based on the influence of plug shape. The shape of plug in the EPR was changed through the dimension parameters denoted by dimension (h) and slope angle (α). The simulation results show that the electromagnetic force and dynamic response of the EPR can be optimized when h and α are selected at 3mm and 480, respectively.

8p spiritedaway36 28-11-2021 10 1   Download

The objective of this analysis is to evaluate the necessity of large clinical trials using FLOW trial data. Methods: The FLOW pilot study and definitive trial were factorial trials evaluating the effect of different irrigation solutions and pressures on re-operation. To explore treatment effects over time, we analyzed data from the pilot and definitive trial in increments of 250 patients until the final sample size of 2447 patients was reached.

7p vitennessee2711 01-02-2021 13 2   Download

Testing of agricultural sprinklers is necessary to find the optimum field operating conditions with minimum cost while satisfying design water distribution criteria. In the present study two twin-nozzle agricultural sprinklers were tested in field under ten different operating pressures ranging from 1.6 kg/cm² to 3.5 kg/cm². In each experiment sprinkler discharge rate, nozzle pressure, radius of throw, and water distribution pattern around the sprinkler were observed. The average discharge coefficients of the two sprinkler nozzles were determined.

12p angicungduoc6 22-07-2020 10 3   Download

A field study was undertaken to evaluate the performance of 4 lph capacity inline drip emitter in farmer’s field at 0.75 kg/cm2 and 1.00 kg/cm2 operating pressure. The efficient water application through drip irrigation is mainly depends upon the hydraulic parameters of the system, which includes the effect of pressure on coefficient of manufacturer variation, emitter flow variation, emission uniformity, uniformity coefficient, application efficiency and distribution efficiency.

8p chauchaungayxua4 18-03-2020 13 0   Download

Karanja estuary, an important estuarine ecosystem located adjoining to the Jawaharlal Nehru Port (largest container handling Seaport in India), Raigad district of Maharashtra. The North West coast of India is famous for the dol nets fishery. Dol nets (a kind of bag net) are operated in coastal seas having strong tidal currents and amplitude with its mouth opening always facing towards the direction of the tide.

9p cothumenhmong3 22-02-2020 17 1   Download

In modern agricultural systems, chemical-based weed control is becoming difficult to ignore (usage of herbicides) in weed management because of its effectiveness to accomplish weed control and at the same time, increases yield largely. However, both economic and ecological attention the application of herbicide should be optimum.

5p chauchaungayxua3 07-02-2020 9 1   Download

Spraying is one of the most effective and efficient techniques for applying spray liquid to protect crops. The nozzle is a major component in determining the amount of spray applied to an area, the uniformity of application, the coverage obtained on the target surface and the amount of potential drift. Hollow cone, solid cone and 3D action nozzles were selected for the study, which were widely used by the local farmers for cotton crop. The selected nozzles were evaluated in spray patternator for different operating parameters.

15p nguaconbaynhay3 07-02-2020 21 3   Download

The purpose of this work is to provide a complete study of the influence of operational parameters of the supercritical carbon dioxide assisted extraction (SC CO2E) on yield of wedelolactone from Wedelia calendulacea Less., and to find an optimal combination of factors that maximize the wedelolactone yield. In order to determine the optimal combination of the four factors viz. operating pressure, temperature, modifier concentration and extraction time, a Taguchi experimental design approach was used: four variables (three levels) in L9 orthogonal array.

7p kethamoi1 17-11-2019 15 1   Download

An experimental study of bioethanol adsorption on natural Iranian clinoptilolite was carried out. Dynamic breakthrough curves were used to investigate the best adsorption conditions in bioethanol liquid phase. A laboratory setup was designed and fabricated for this purpose. In order to find the best operating conditions, the effect of liquid pressure, temperature and flow rate on breakthrough curves and consequently, maximum ethanol uptake by adsorbent were studied.

10p kequaidan1 16-11-2019 18 1   Download

Adenosine is implicated in the modulation of cardiovascular responses either at the peripheral or at central level in experimental animals. However, there are no dedicated reviews on the involvement of adenosine in mediating the hypotensive response of centrally administered clonidine in general and specifically in aortically barodenervated rats (ABD). The conscious ABD rat model exhibits surgically induced baroreflex dysfunction and exaggerated hypotensive response, compared with conscious sham-operated (SO) rats.

10p trinhthamhodang1 16-11-2019 14 1   Download

The most important ageing effect on the reactor pressure vessel (RPV) is radiation embrittlement, which is mainly caused by fast neutrons during operation lifetime of nuclear reactors. The aim of this study was to investigate the DPA (displacement per atom) rate, an important parameter describing radiation damage to the RPV, and identify the position of the maximum DPA rate in the RPV of the VVER-1000/V320 reactor using the Monte Carlo code MCNP5.

10p vineptune2711 04-11-2019 10 0   Download

The employed method is easy to implement in practical applications and moreover, the SMC exhibits the desired dynamic properties during the entire output-tracking process independent of perturbations. Simulation results are presented to demonstrate the effectiveness of the proposed controller in terms of performance, robustness, and stability. Results show that the proposed controller for the load following operation is so effective that the xenon oscillations are kept bounded in the given region.

11p minhxaminhyeu5 30-06-2019 21 0   Download

In addition, spray operation has been added to this model. In the second step, the single-cell model has been developed into a multicell model to consider the effects of the nodalization and spatial location of cells in the containment pressurization in comparison with the single-cell model.

14p minhxaminhyeu5 30-06-2019 15 1   Download

The aim of this work is to simulate the thermohydraulic consequences of a main steam line break and to compare the obtained results with Rossendorf Coolant Mixing Model (ROCOM) 1.1 experimental results. The objective is to utilize data from steady-state mixing experiments and computational fluid dynamics (CFD) calculations to determine the flow distribution and the effect of thermal mixing phenomena in the primary loops for the improvement of normal operation conditions and structural integrity assessment of pressurized water reactors.

11p minhxaminhyeu5 30-06-2019 49 0   Download

This research was performed to determine the effect of different operating parameters on seed holding in a single seed metering unit. The metering unit was a vertical seed plate with a vacuum, used in seeding maize (Zea mays L.). An electronic counter in the metering unit was used to determine the holes without seed on the plate holes.

7p masterbarista 14-01-2019 16 1   Download

In this study, a Faraday type MagnetoHydroDynamic (MHD) generator is studied to consider the effect of electrical characteristics to the thermal efficiency. The generator performance is specified by optimizing the cycle efficiency with respect to the load parameter and by optimizing output power density with respect to seed fraction and operating pressure.

10p sansan2 26-05-2018 32 1   Download

The concept of spiral wound gasket construction was originated by Flexitallic in 1912, inaugurating the beginning of a new era in safe, effective sealing. The primary purpose for this development was the increasingly severe temperatures and pressures used by U.S. refinery operators in the first half of the century.

49p vuthanhdac 25-04-2017 46 6   Download