scholarly journals CFD analysis of the Ferrari 348 GTC intake system

2019 ◽  
Vol 24 (6) ◽  
pp. 128-133
Author(s):  
Monika Andrych-Zalewska ◽  
Łukasz Wielki ◽  
Krzysztof Ziora
Keyword(s):  
Static Pressure ◽  
Cfd Analysis ◽  
Ansys Fluent ◽  
Intake System ◽  
Static Pressure Distribution ◽  
Flow Disturbances ◽  
Computational Fluid Dynamics Analysis ◽  
Angular Velocities ◽  
Fluent Software ◽  
Flow Directions

The article presents CFD (Computational Fluid Dynamics) analysis of the intake system of a Ferrari 348 GTC sports car. With this system, an adequate amount of air is supplied relative to the current demand for fuel combustion. The air demand of a given engine was deter-mined, then analyzes were carried out. The article contains an analysis of the velocity distribution: total velocities, angular velocities and static pressure distribution. In addition, local velocity and flow in the filtration chamber were determined along with the flow directions and returns as well as power lines. The cycle impact on the temperature, locations of the highest speed drop, increase in turbulence, the largest pressure differences, and modulus of elasticity were determined. This information allows to assess whether there are no unwanted phenomena occurring in the system, such as flow disturbances. The Ansys Fluent software was used for analysis.

CFD Analysis of Static Pressure on the Casing of Taker-In in Carding Machine

2011 ◽  
Vol 66-68 ◽  
pp. 504-509
Author(s):  
Xian Guo Han ◽  
Peng Zi Sun ◽  
Ye Ping Zhao ◽  
Ji Peng Cao
Keyword(s):  
Numerical Calculation ◽  
Calculation Result ◽  
Static Pressure ◽  
Rotation Speed ◽  
Cfd Analysis ◽  
Air Inlet ◽  
Calculation Results ◽  
Fluent Software ◽  
Carding Machine ◽  
Good Agreement

This paper gives a model of using CFD to calculate the airflow between taker-in and its casing in the A186 carding machine for researching static pressure of the airflow with FLUENT software. The model analyzes the static pressure in the casing of taker-in under the condition of the different rotation speeds of taker-in and cylinder and two gauges in air inlet of the casing. The numerical calculation of the model shows that the rotation speed of taker-in and cylinder has an obvious influence on the static pressure of the casing, of which the effect of rotation speed of taker-in is larger than that of cylinder, and the static pressure increases gradually from air inlet to outlet between taker-in and its casing. Furthermore, the calculation results confirm that while the gauge of the air inlet diminish, the static pressure of the air inlet decreases but that of the air outlet has little change. The calculation result of the model has a good agreement with the conclusion of previous study with the experimental method.

scholarly journals THE EFFECT OF CONVERGENT-DIVERGENT NOZZLE PROFILE ON ITS PERFORMANCE

2019 ◽  
Vol 19 (1) ◽  
pp. 14-43
Author(s):  
Arkan Al-Taie ◽  
Hussien W Mashi ◽  
Ali M Hadi
Keyword(s):  
Mach Number ◽  
Static Pressure ◽  
Pressure Ratio ◽  
Sharp Decrease ◽  
Inlet Pressure ◽  
Ansys Fluent ◽  
Static Pressure Distribution ◽  
Flow Parameters ◽  
Sudden Rise ◽  
Flow Through

The paper presents the effect of convergent-divergent nozzles profile across specified inlet pressures values from (1.5 bar-4 bar), with constant back pressure of (1 bar). The flow of air through three convergent-divergent nozzles was studied theoretically. The flow was assumed to be one-dimensional, adiabatic and reversible (isentropic). The flow parameters like static pressure ratio and Mach number were analyzed. The flow parameters were obtained in term of area ratio along the nozzle. MATLAB code was built in order to find the Mach number along the nozzles, by using Newton-Raphson method. The shockwave position inside the nozzles was determined, using "analytic method". ANSYS fluent 18 was used to simulate the flow through the three nozzles. Two- dimensional, turbulent and viscous models were utilized to solve the governing equations. K-? model was used to model the turbulent effect. The results concluded that, reduction in inlet pressure can not affect the flow upstream the throat. Also the shockwave appearance can be noticed by a sudden rise in static pressure associated with a sharp decrease in Mach number. Shockwave moves toward the throat by reduction the inlet total pressure .By comparison the static pressure distribution along the three nozzles where can be deduced that the profile has an effect on the flow character i.e. (static pressure Mach no).The best performance among the nozzles is the performance of nozzle (N1), which (75%) of its length work as nozzle at the lowest inlet pressure of (1.5bar) while (44% and 60%) of the nozzles length for (N2 and N3) respectively work as the nozzle.

Comparative Energetic and Exergetic Analysis of Conventional and Sloped Solar Chimney Power Plants

2020 ◽  
Vol 9 (4) ◽  
pp. 57-73
Author(s):  
Hela Atia ◽  
Adrian Ilinca ◽  
Ali Snoussi ◽  
Rachid Boukchina ◽  
Ammar Ben Brahim
Keyword(s):  
Inclination Angle ◽  
Power Plants ◽  
Energetic Efficiency ◽  
Cfd Analysis ◽  
Exergy Destruction ◽  
Solar Chimney ◽  
Ansys Fluent ◽  
Solar Radiation Intensity ◽  
Fluent Software ◽  
Exergetic Analysis

A CFD analysis using ANSYS Fluent software was conducted to study the effects of collector slope on solar chimney's performances. Three solar chimney configurations, named A, B, and C, which correspond, respectively, to an inclination angle of the collector roof of 0°, 2.5°, and 5°, were investigated. The results show that the thermodynamic performances of the solar chimney were improved by increasing the inclination angle of the collector roof. In fact, the power extracted from the sloped solar chimney power plants increases with increasing the inclination angle and the solar radiation intensity, while it achieves a maximum at 800 W/m2 for configuration A. The energetic and the exergetic analysis show that configure B has the best performance in terms of conventional, effective, and total efficiencies of the collector and in terms of exergy destruction ratios in both the collector and the transition section. Whereas, configuration C has the highest amount of power extracted and the best overall energetic efficiency.

Numerical Simulation of Vibration of Induced Draft Fan behind Desulfurization Tower Caused by Dust Accumulation

2014 ◽  
Vol 675-677 ◽  
pp. 619-622
Author(s):  
Tai Lv ◽  
Pei Ye He
Keyword(s):  
Power Plants ◽  
Static Pressure ◽  
Thermal Power ◽  
Fine Sand ◽  
Stable Operation ◽  
Static Pressure Distribution ◽  
Low Load ◽  
Fluent Software ◽  
Induced Draft Fan ◽  
Dust Accumulation

For a reduction ofthe volume and cost of equipment, some thermal power plants have no gas heater in their desulfurization systems. Because of desulfurized gas with high humidity, residual dust, and limestone slurry, induced draft fan (IDF) is often subject to vibration caused by dust accumulation while operating, resulting in occasional shut-down for dust cleaning. To solve this problem, fine sand was added to jet nozzle in the circumstance of severe dust accumulation, to enhance cleaning effect in this study. The Fluent software was used to simulate the static pressure distribution on non-working surfaces of the IDF blades with different sand flows. Results showed that the addition of fine sand could enhance the static pressure on non-working surfaces. The optimum ratio of nozzle flow to sand flow was concluded. This was of great significance for IDF on low load to prevent dust accumulation vibration and to keep safe and stable operation.

scholarly journals Aerodynamics Analysis and Range Enhancement Study of 81mm Mortar Shell (French Design)

2021 ◽  
Vol 84 (1) ◽  
pp. 148-159
Author(s):  
Roman Kalvin ◽  
Juntakan Taweekun ◽  
Muhammad Waqas Mustafa ◽  
Saba Arif
Keyword(s):  
Drag Coefficient ◽  
Parabolic Type ◽  
Cfd Analysis ◽  
Ansys Fluent ◽  
Flight Duration ◽  
Percent Increase ◽  
Fluent Software ◽  
Computational Fluid Dynamics Cfd ◽  
French Design ◽  
Coefficient Reduction

The aim of this research is performing the Computational Fluid Dynamics (CFD) analysis of 81mm Mortar Shell (French Design). The analysis is performed using ANSYS Fluent Software on three different Mach numbers (0.72, 0.76, and 0.84) and results are compared with existing design of 81mm HE M57D A2 Mortar. The drag coefficient of new modified design is found to be less than the existing model. The range of mortar shell is increased by 271 meters because of low drag coefficient with 5.96% percent increase in range and 15.73% decrease in drag coefficient value. Parabolic type; light weighted material fuze casing applied over the existing fuze will result in increase in aerodynamics, range enhancement and drag coefficient reduction. Weight optimization by using lighter material for mortar components and increasing the muzzle velocity can also increase flight duration of the projectile and increase its range. The analysis on 81mm Mortar Shell is a part of range enhancement study to overcome the short fall in required range of mortar shells.

Comparison of Tube-Tube Collision Frequency With and Without the Use of Impingement Plate

2018 ◽  
Author(s):  
Jiří Buzík ◽  
Tomáš Létal ◽  
Pavel Lošák ◽  
Martin Naď ◽  
Marek Pernica
Keyword(s):  
Heat Exchanger ◽  
Tube Bundle ◽  
Cross Flow ◽  
Data Bank ◽  
Shell Side ◽  
Ansys Fluent ◽  
Vibration Data ◽  
Impingement Plate ◽  
Computational Fluid Dynamics Analysis ◽  
Fluent Software

The aim of the present work is to carry out the checking of the tube bundle of heat exchanger for the occurrence of tube-tube collision caused by cross-flow vibration with and without the use of impingement plate. This will be achieved using numerical 2D CFD (computational fluid dynamics) analysis. The 2D analysis is done using ANSYS Fluent software. Tube movement in the shell side is provided by UDF (user-defined function) DEFINE_SDOF_PROPERTIES. By determining the stiffness and weight of the tubes, two-way fluid and tube interaction can be achieved. Due to limitations of 2D CFD analysis, only the occurrence of the tube-tube or tube-shell collisions can be observed. Unfortunately, the first collision causes termination of the simulation due to negative volumes in dynamic mesh. Possible solutions to the issue are also discussed in presented paper. The analyzed geometry of the shell side is taken from the Heat Exchanger Tube Vibration Data Bank [2]. This publication collects heat exchanger data for which vibration phenomena have been reported. The above-mentioned geometry is a domain with tube bundle at the shell side under the inlet. In the same domain, both the tie rod and the seal strips and the 45° turn of the partitions are considered.

Design of a Turbopiston Pump Guided by Computational Analysis

2019 ◽  
Author(s):  
Ting Wang ◽  
Patrick W. Rousset
Keyword(s):  
Total Pressure ◽  
Static Pressure ◽  
Flow Behavior ◽  
Original Design ◽  
Ansys Fluent ◽  
Pressure Losses ◽  
Sliding Mesh ◽  
Positive Displacement ◽  
Static Pressure Distribution ◽  
Large Flow

Abstract An innovative pump, TurboPiston Pump (TPP), has been invented to incorporate the merits of centrifugal, axial, and positive displacement pumps. The TPP is designed to deliver large flow rates with a potential at high pressure of up to 1000 psia with one stage. To improve the original design, an understanding of the flow behavior inside the pump is needed. The objective of this study is to simulate the flow field inside the pump and study its performance to guide the design process. This study includes modeling the pump with the transient sliding mesh scheme using a commercial computational fluid dynamics solver, ANSYS/FLUENT. The flow pattern, static pressure distribution, and total pressure losses are calculated and analyzed. The regions of high total pressure losses and potential creation of cavitation are identified. A plastic demonstration model and a metal prototype have been fabricated based on the result of the CFD analyis.

DESIGN AND ANALYSIS OF A SCREW PROPELLER IN MARINE VEHICLE

2019 ◽  
Vol 14 (2) ◽  
Author(s):  
Santhosh V
Keyword(s):  
Velocity Distribution ◽  
Static Pressure ◽  
Maximum Velocity ◽  
Ansys Fluent ◽  
Propulsive Efficiency ◽  
Static And Dynamic Analysis ◽  
Velocity Magnitude ◽  
Screw Propeller ◽  
Fluent Software ◽  
Marine Vehicle

In marine vehicle like ships, submarine and torpedoes use propeller for its propulsion, Propeller is to develop the thrust and propulsive efficiency. The paper deals with modeling and analyzing of a screw propeller. There are several important parameters to be considered for modeling screw propeller by using Solidworks software. Static and dynamic analysis is to be carried out in Ansys fluent software. Thus, the simulation of screw propeller provides maximum velocity to the outlet. So, the velocity distribution has been observed. Then the velocity distribution is displayed by means of velocity magnitude in meter per second and static pressure in pascal.

scholarly journals Specific Features of Flow on Compression Surfaces of a Convergent Air Intake

2022 ◽  
Vol 16 (2) ◽  
pp. 29-40
Author(s):  
S. A. Akinin ◽  
A. V. Starov
Keyword(s):  
Static Pressure ◽  
Experimental Studies ◽  
Three Dimensional ◽  
Turbulence Models ◽  
Separated Flow ◽  
Ansys Fluent ◽  
Pressure Distributions ◽  
Air Intake ◽  
Fluent Software ◽  
Inner Channel

The results of computational and experimental studies of a model of a hypersonic convergent air intake are presented. Experimental studies were carried out in a hot-shot wind tunnel IT-302M SB RAS at a Mach number M = 5.7 and an angle of attack α = 4 °. Numerical modeling was carried out in a three-dimensional setting in the ANSYS Fluent software package. The calculations were carried out in 4 versions using different turbulence models: k-ɛ standard, RNG k-ɛ, k-ɷ standard and k-ɷ SST. The features of the flow structure are established. The pressure distributions on the compression surfaces and in the air intake channel are obtained. The separated flow at the entrance of the inner channel was studied. It was found that the use of various turbulence models has a significant effect on the size and position of separation. The best agreement between the calculated and experimental data on the level of static pressure was shown by the variant with the k-ɛ standard turbulence model.

scholarly journals CFD analysis on the influence of angle of attack on vertical axis wind turbine aerodynamics

2021 ◽  
Vol 850 (1) ◽  
pp. 012027
Author(s):  
Prateek Srivastava ◽  
Sachin Kansal ◽  
Ashish Talwalkar ◽  
R Harish
Keyword(s):  
Wind Turbine ◽  
Angle Of Attack ◽  
Vertical Axis ◽  
Cfd Analysis ◽  
Vertical Axis Wind Turbine ◽  
Cfd Simulations ◽  
Ansys Fluent ◽  
Wind Turbine Aerodynamics ◽  
Fluent Software ◽  
Overall Performance

Abstract The Angle of Attack (AOA) in a Vertical Axis Wind Turbine (VAWT) plays an important role in determining the forces and the power generated by the wind turbine. It is difficult to find the suitable AOA due to the complex and constantly changing wind flow patterns. In this paper, we have performed CFD simulations using Ansys Fluent software, based on the constantly changing AOA. The CFD simulations were conducted by selecting a suitable range of AOA and the velocity of the wind. The selected range of AOA varied from 5 degrees to 25 degrees with increments of 5 degrees and the range of the air velocities varied from 7m/s to 21m/s with increments of 7m/s. The tests were also performed using the X-Foil software. The results obtained from the CFD simulations, done by using the Ansys Fluent Software and from the X-Foil software, were then compared to give a more accurate and optimized AOA and velocity value. This optimization of the AOA could enhance the overall performance of the Vertical Axis Wind turbine.

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