Make a summary of the importance of fluid dynamics in the railway industry.
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Question 25
Make a summary of the importance of fluid dynamics in the railway industry.
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Solved in 3 steps
- 25. Describe the importance of computational fluid dynamics (CFD) in the Railway Industry.What are the modes of Transportation? -Highway and Railway Engineering10 - How best to describe the traction force in a rail vehicle? A) the force of pulling other railway carsB) holding force to railsC) wagon braking forceD) braking force in all vehiclesE) turning force on the wheel
- Make a introduction about transportation (for research in highway and railway engineering)Traveling with an initial speed of 70 km/h, a car accelerates at 6000 km/h 2 alonga straight road. How long will it take to reach a speed of 120 km/h? Also, through what distancedoes the car travel during this time? A sketch of the scenario should be created by you to enhance your work translate the SI units of speed to English Imperial Units and take the opportunity tocomment on your efforts on how these speeds and accelerations compare with your ownunderstanding of speed and velocity when you have been in a moving vehicleDiscuss and explain in details 5 importance of CFD of computational fluid dynamics in the field of Civil engineering
- As we explained in Chapter 10, viscosity is a measure of how easily a fluid flows. For example, honey has a higher value of viscosity than does water because if you were to pour water and honey side by side on an inclined surface, the water will flow faster. The viscosity of a fluid plays a significant role in the analysis of many fluid dynamics problems. The viscosity ofwater can be determined from the following correlation:μ = c1 10c2 1(T−c3 )whereμ = viscosity (N/s.m2 )T = temperature (K)c1=2.414×10-5 (N/s.m2 ) c2= 247.8 K c3= 140 KUsing Excel, create a table that shows the viscosity of water as a function oftemperature in the range of 0° C (273 15 ) to 100° C (373 15 ) in increments of 5° C. Also create a graph showing the value of viscosity as a function of temperature.The drag force experienced by a commercial transport (such as a 787) in cruise depends on its surface area (A), its velocity (V ), the speed of sound (a), the density (ρ) and viscosity (µ) of the fluid, and its angle of attack (α). (a) Express the non-dimensional drag as a function of the other non-dimensional groups. (b) Tests on a model 787 are performed at 1/40th scale. Assume that the speed of sound in the wind tunnel is one-half the speed of sound of the full-scale aircraft. To achieve dynamic similarity in the model test, what would the wind tunnel speed need to be in the model compared to the full-scale prototype? What would the kinematic viscosity of the wind tunnel fluid be compared to air?Suppose you want to design an air – bag system that can protect the driver in a head on collision at a speed of 100 kph. Estimate how fast the air bag must inflate to effectively protect the driver. Assume the car crumples upon impact over a distance of about 1m. How does the use of the seat belt help the driver?
- RAILROAD ENGINEERING Speed factor to be applied for locomotive operational speed equals 120 kph (ANSWER IN 3 DECIMAL PLACES)1. There are four sizes based on the speed of the facility for regulatory signs, choose the wrong statement. a. D for expressways b. B for rural roads with speed limits between 60 kph and 70 kph c. A for urban low-speed road d. C for high-speed urban highways 2. A form of hydropower that converts the energy of tides into electricity. a. Geothermal Energy b. Tidal Energy c. Solar Energy d. Wind Energy 3. A mixture of hydrocarbons like alkanes and cycloalkanes. a. Petroleum and Natural Gas b. Coal c. Biomass d. Fuel 4. This energy generally involves low running costs since it saves 80% on fossil fuels. a. Geothermal Energy b. Tidal Energy c. Solar Energy d. Wind Energy 5. Destruction of the Earth’s surface caused by human activities and the misuse of natural resources. a. Land pollution b. Non-renewable resource c. Renewable resource d. Natural resourcesWhich car shows the least and greatest acceleration?