I wrote a program on Matlab that is supposed to solve a 2-dimensional dirichlet boundary condition heat transfer problem. In programming context, it uses a number of iterations in series to calculate the next value using data acquired from the previous iterations.
I am running MATLAB...
Hey there,
I am trying to model engine combustion dynamics on MatLab using basic physical laws. My code starts bugging just at the start of the Power Stroke. The pressure value shoots off to 60 bars right at the start. I tried narrowing down the error and I think i have a problem...
I wanted some help in finding out the time taken for a differential mass of gasoline being burnt in the cylinder during the power stroke. Also, does it depend on the residual temperature of the mixture?
I tried to find it out through Arrhenius equations but am having a problem finding out...
Thanks for the replies, :smile:
Thats quite a wide range of temperatures. :-p I wanted to run some theoretical stress analysis on the piston head for the power stroke. I'm having a hard time figuring out an effective approach to calculate the pressure variation...
I wanted to know what exhaust temperature range would i get with a 48cc 4 stroke single cylinder gasoline engine operating at standard parameters.
Also, what variation in engine efficiency would i get by varying exhaust temperatures using water as a coolant?
uh oh... this was one of those times when u assume that the listener ( or reader in this case ) knows what u r thinking... :redface:
I forgot to mention... the force is equally distributed throughout the plate surface... What would happen for this case?
If i were to attach 2 helical springs (of same uncompressed length but different Spring constants) to metal plates on both ends and then apply a compressive stress on one of the plates, will both the springs compress the same? even though they hold a different tendency for compression...
I need to devise a way to measure the torque of a Rotating Motor. Now i already have 2 ways in mind but both of them require that the motor stops while still being powered by a battery or something. ( I think we risk permanent damage to the motor )
Can someone point me to a method that...
You got the first derivative completely wrong. Derivative of Tan x is not sec x, its sec^2 x. This way your problem goes as follows.
y = x tan x
y' = tanx + x sec^2 x
and
y" = sec2x + x ( 2 sec2x tan x ) + sec2 x
[ Derivative sec2x is given by first reducing the SQUARE FORM to a...
thanks for the info. Do you have any tires in mind that would do good?
I need to get the exact tire rolling drag co-efficient. Please point me to a link on the web that would serve my purpose. Thanks again!
Ok here goes,
I am planning to build a car worthy enough of participating in the Shell Eco marathon 2011. Now i have the design and power needs sorted out at the moment but there is still a lot i have to do here. Here is the basic goal that me and my team are working on.
"To build a car...
its a small car actually... a single driver would hardly fit in. Its about 2 meters in length and 110 cm high. What i need to do is increase its efficiency to as high as possible. Would bicycle tires do good? Anything else that i need to be taking into consideration? Thanks for the help.