scholarly journals Design and Wheel Torque Performance Test of the Electric Racing Car Concept E-Falco

2021 ◽  
Vol 2 (2) ◽  
pp. 61-69
Author(s):  
Hadi Pranoto ◽  
Bambang Darmonoa ◽  
Zainal Arifin ◽  
Ibnu Susanto
Keyword(s):  
Fossil Fuels ◽  
Performance Test ◽  
Fluid Dynamic ◽  
Peak Torque ◽  
Frame Structure ◽  
Air Drag ◽  
Acceleration Time ◽  
Electric Car ◽  
Wheel Torque ◽  
Computation Fluid Dynamic

To reduce the use of fossil fuels in vehicles and reduce exhaust emissions, it is necessary to use electric vehicle technology. Solidworks software is used in designing and manufacturing an electric car and a simulation is carried out using CFD (Computation Fluid Dynamic) software to determine the strength of the frame structure and air drag when the electric car is running. The performance test of the motor by using the dyno test to determine the acceleration time, power, and torque of the motor. The results of the simulation show that at a speed of 10 km/h the air drag is 6.24 N, a speed of 20 km/h is 24.64 N, and a speed of 40 km/h is 93.92 N. The results of the dyno test shows that the acceleration time with full acceleration from a speed of 0-70 km/h is 13.63 seconds, the maximum power output by the motor is 14.17 hp occurs at a speed of 36-53 km/h and the amount of peak torque released by the motor occurs at a speed of 13 km/h at 228 Nm.

scholarly journals CO Preferential Oxidation in a Microchannel Reactor Using a Ru-Cs/Al2O3 Catalyst: Experimentation and CFD Modelling

Processes ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 867
Author(s):  
Kyatsinge Cedric Musavuli ◽  
Nicolaas Engelbrecht ◽  
Raymond Cecil Everson ◽  
Gerrit Lodewicus Grobler ◽  
Dmitri Bessarabov
Keyword(s):  
Goodness Of Fit ◽  
Fossil Fuels ◽  
Fluid Dynamic ◽  
Hydrogen Fuel Cell ◽  
Preferential Oxidation ◽  
Microchannel Reactor ◽  
Cfd Modelling ◽  
Preferential Oxidation Of Co ◽  
Reactor Technology ◽  
Al2o3 Catalyst

This work presents an experimental and modelling evaluation of the preferential oxidation of CO (CO PROX) from a H2-rich gas stream typically produced from fossil fuels and ultimately intended for hydrogen fuel cell applications. A microchannel reactor containing a washcoated 8.5 wt.% Ru/Al2O3 catalyst was used to preferentially oxidise CO to form CO2 in a gas stream containing (by vol.%): 1.4% CO, 10% CO2, 18% N2, 68.6% H2, and 2% added O2. CO concentrations in the product gas were as low as 42 ppm (99.7% CO conversion) at reaction temperatures in the range 120–140 °C and space velocities in the range 65.2–97.8 NL gcat−1 h−1. For these conditions, less than 4% of the H2 feed was consumed via its oxidation and reverse water-gas shift. Furthermore, a computational fluid dynamic (CFD) model describing the microchannel reactor for CO PROX was developed. With kinetic parameter estimation and goodness of fit calculations, it was determined that the model described the reactor with a confidence interval far greater than 95%. In the temperature range 100–200 °C, the model yielded CO PROX reaction rate profiles, with associated mass transport properties, within the axial dimension of the microchannels––not quantifiable during the experimental investigation. This work demonstrates that microchannel reactor technology, supporting an active catalyst for CO PROX, is well suited for CO abatement in a H2-rich gas stream at moderate reaction temperatures and high space velocities.

scholarly journals Performance Test of a Household Rocket Stoves Fired with Coconut Frond, Coconut Shell and Bamboo

2021 ◽  
Vol 8 (1) ◽  
pp. 59-64
Author(s):  
Almuzakkir . ◽  
Muhammad . ◽  
Adi Setiawan
Keyword(s):  
Thermal Efficiency ◽  
Fossil Fuels ◽  
Performance Test ◽  
Performance Testing ◽  
Biomass Energy ◽  
Test Method ◽  
Fuel Oil ◽  
Coconut Shell ◽  
Water Boiling Test ◽  
A Value

Fuel is something that is very important in everyday life. Almost every human being needs fuel to meet their needs and support their activities, for example cooking in household needs. Currently, fossil fuels or fuel oil (BBM) are still widely used to meet demand, however, it should be noted that fossil fuels or fuel oil (BBM) are non-renewable natural resources. The biomass rocket stove is one of the modern stove innovations that uses biomass energy as the main energy source. Rocket stoves are designed to increase fuel efficiency with thermal efficiency, a combination of the increased combustion efficiency and heat transfer associated with burning briquette fuel. The purpose of this research is to design and manufacture rocket stove fired with coconut and bamboo biomass for household needs as well as developing methods and equipment for performance testing of rocket stoves. In this study, several steps were carried out, including designing a rocket furnace, selecting biomass fuel and testing the performance of a rocket furnace. From the design of the biomass stove, it is noteworthy that the design with two holes makes the combustion air easily enters and makes combustion in the furnace more perfect and efficient. Water boiling test using three types of solid fuels with the cold start condition suggested that the highest thermal efficiency was coconut fronds with a value of 38% and the lowest thermal efficiency was found from coconut shell combustion, i.e. 22%. During hot start test, the highest thermal efficiency was obtained from coconut fronds firing with a value of 41%. Moreover, with simmer water boiling test method, firing the rocket stove with coconut fronds showed the highest thermal efficiency with a value of 37%. Keywords: Rocket Stoves, Coconut Fronds and Shells, Bamboo, Thermal Efficiency, .Water Boiling Tests.

Time to peak torque and acceleration time are altered in male patients following traumatic shoulder instability

2018 ◽  
Vol 27 (8) ◽  
pp. 1505-1511 ◽  
Author(s):  
Jin Hyuck Lee ◽  
Ji Soon Park ◽  
Hyun Jung Hwang ◽  
Woong Kyo Jeong
Keyword(s):  
Shoulder Instability ◽  
Peak Torque ◽  
Acceleration Time ◽  
Time To Peak ◽  
Male Patients

Computation Fluid Dynamic Modeling of a Proposed Influent Pump Station

2006 ◽  
Vol 2006 (5) ◽  
pp. 7094-7114 ◽  
Author(s):  
Edward Wicklein ◽  
Charles Sweeney ◽  
Constantino Senon ◽  
Doug Hattersley ◽  
Brian Schultz ◽  
...  
Keyword(s):  
Dynamic Modeling ◽  
Fluid Dynamic ◽  
Pump Station ◽  
Computation Fluid Dynamic

Peak torque angle, acceleration time and time to peak torque as additional parameters extracted from isokinetic test in professional soccer players: a cross-sectional study

2020 ◽  
pp. 1-12
Author(s):  
Daniel Germano Maciel ◽  
Glauko André Figueiredo Dantas ◽  
Mikhail Santos Cerqueira ◽  
Jean Artur Mendonça Barboza ◽  
Vinícius Vieira De Alencar Caldas ◽  
...  
Keyword(s):  
Peak Torque ◽  
Cross Sectional Study ◽  
Soccer Players ◽  
Sectional Study ◽  
Cross Sectional ◽  
Acceleration Time ◽  
Time To Peak ◽  
Professional Soccer ◽  
Isokinetic Test ◽  
Torque Angle

Biodiesel Production from Dairy Scum Oil by Using Heterogeneous Catalyst and its Performance Test on CI Engine

2015 ◽  
Vol 813-814 ◽  
pp. 810-814
Author(s):  
B.R. Omkaresh ◽  
S.B. Arun ◽  
R. Suresh ◽  
K.V. Yathish
Keyword(s):  
Fossil Fuels ◽  
Performance Test ◽  
Acid Methyl Ester ◽  
Injection Pressure ◽  
Biodiesel Production ◽  
Oxides Of Nitrogen ◽  
Gas Temperature ◽  
Brake Power ◽  
Ci Engine ◽  
Exhaust Gas Temperature

Now a days increasing in prices and depletion of fossil fuels, creates very necessary to find out an alternative fuel (biodiesel) from renewable natural resources. This paper deals with the transesterification of animal fat (dairy scum oil) to obtain Fatty Acid Methyl Ester (FAME) or biodiesel in presence of calcium oxide catalyst at 65°C. The properties of produced biodiesels and their blend for different ratios (B10, B20, B30 and B100) are comparable with properties of diesel and ASTM biodiesel standards. Tests have been conducted on CI engine for different blends of biodiesel with standard diesel, at an engine speed of 1500 rpm, fixed compression ratio 17.5, fixed injection pressure of 200bar and varying brake power. The performance parameters includes brake thermal efficiency, brake specific fuel consumption, Exhaust gas temperature and emissions parameters as Carbon monoxide (CO), Carbon dioxide (CO2), Hydrocarbon (HC) and Oxides of nitrogen (NOx) varying against Brake Power (BP).

CFD Based Ash Deposition Prediction in a BFB Firing Mixtures of Peat and Forest Residue

2003 ◽  
Author(s):  
Christian Mueller ◽  
Dan Lundmark ◽  
Bengt-Johan Skrifvars ◽  
Rainer Backman ◽  
Maria Zevenhoven ◽  
...  
Keyword(s):  
Combustion Chamber ◽  
Computational Fluid Dynamic ◽  
Power Plants ◽  
Fossil Fuels ◽  
Fluid Dynamic ◽  
Thermal Power ◽  
Biomass Combustion ◽  
Mineral Matter ◽  
Forest Residue ◽  
Bubbling Fluidized Bed

Fuels currently used for energy production in thermal power plants are characterized by their huge variety ranging from fossil fuels to biomass and waste. This multitude of fuels offers opportunities to the energy industry and nowadays many power plants do not fire either of these fuels but mixtures of them are burnt. While this procedure may lead to overall economic and environmental advantages it is very demanding for the boiler operators to still meet expectations concerning boiler performance, boiler availability and emission regulations. In the course of this latest trend in boiler operation, ash related operational problems such as slagging, fouling and corrosion are ranking very high on the list of reasons leading to significant reduction of boiler availability. Ash related problems strongly dependent on fuel specific aspects, such as the mineral matter distribution in the fuel, aspects specific to the used combustion technique as well as design aspects unique for the combustion chamber of any operating power plant. The overall goal in combustion related research is therefore the prediction of potential operational problems originating from fuel streams entering the combustion chamber as well as those originating from the design of individual furnaces. In our earlier work we have strongly focused on developing an advanced ash behavior prediction tool for biomass combustion combining computational fluid dynamic calculations (CFD) and advanced fuel analysis. In this paper the tool is applied to analyze the slagging and fouling tendency in a 295 MW bubbling fluidized bed boiler fired with mixtures of peat and forest residue. In addition to the overall deposition prediction this work focuses on details of the models used in the computational fluid dynamic calculations. These include a study on the importance of the accurate description of the fuel feeding system and related to this aspect the advanced description of the bubbling bed with regard to release of primary gas and ash particles from its surface to the freeboard. Evaluation of the predictions comparing simulation results with deposits on the furnace walls show good agreement.

Performance Optimization of Building Integrated-Mounted Wind Turbine

2012 ◽  
Vol 260-261 ◽  
pp. 69-76 ◽  
Author(s):  
Marco Milanese ◽  
Arturo de Risi ◽  
Domenico Laforgia
Keyword(s):  
Renewable Energy ◽  
Wind Turbine ◽  
Performance Optimization ◽  
Fluid Dynamic ◽  
Geometrical Parameters ◽  
Horizontal Axis Wind Turbine ◽  
Energy Devices ◽  
Two Factors ◽  
High Turbulence ◽  
Computation Fluid Dynamic

Building integrated-mounted wind turbine (BUWT) is one of the most promising renewable energy devices. However, this renewable energy technology is not fully spread principally due to two factors such as uncertainty in the prediction of wind velocity and high turbulence intensity around the building. In this work, the Taguchi method and the analysis of variance (ANOVA) on a horizontal-axis wind turbine has been applied, to study the influence of geometrical parameters such as building depth, width and height, as well as turbine position on the roof and turbine height. To evaluate the above-cited effects, the airflow around an isolated building of parametrical dimension has been simulated using a Computation Fluid Dynamic (CFD) code calibrated against experimental data in a previous paper from the authors. The results reported in the present paper outline the relative effects of the main building geometrical parameters on the performance of a rooftop installed wind turbine and establish basic guidelines for the optimal location of such turbines.

scholarly journals Computational Fluid Dynamic (CFD) Simulation of Bifurcate Artery

2021 ◽  
Author(s):  
Yas Barzegar ◽  
Atrin Barzegar
Keyword(s):  
Blood Flow ◽  
Flow Pattern ◽  
Cfd Simulation ◽  
Fluid Dynamic ◽  
Blood Flow Rate ◽  
Heart Attacks ◽  
Fat Particles ◽  
Fluent Software ◽  
Flow Through ◽  
Computation Fluid Dynamic

Heart attacks and strokes are one of the leading causes of death in the world today, and heart attacks caused by clogged arteries that carry blood to the heart muscle are a significant part of these strokes. These are caused by the accumulation of fat particles in the walls of the arteries and the reduction of blood flow through it over a long process. The process of fat penetration in the underlying layers of the Artery wall has been the focus of many researchers, and various researches and Simulations have been done on it, in each of them, the effect of specific parameters has been considered. In the present study, the effect of blood flow rate on the flow pattern in a bifurcate artery with two ducts has been investigated using FLUENT software with Computation fluid dynamic Method. The effect of the angle between the two ducts of the Artery on the flow pattern has been investigated.

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