13 Questions 75 Answers 0 Followers
Questions related from Saeb AmirAhmadi Chomachar
Assume we have a control system in state space as: xdot1=u1, xdot2=u2, where x is state and u is control. I am interested to know the possibility of complex valued control signal to control such...
08 August 2019 5,366 3 View
I need literature survey and citations for one of my research projects in regard with aerodynamic characteristics of a plate of finite- length. To my humble knowledge, I know boundary-layer theory...
11 November 2018 9,062 2 View
Assume a fluid flow which is rotational and viscous, passes over a flat plate with zero incidence. How will center of pressure move along the plate, if we increase upstream velocity. Does it move...
08 August 2018 4,457 5 View
Look at the image attached. It illustrates an aircraft in uniform airflow. As the aircraft pitches down, the airflow at nose and rear of the aircraft would bend and squeeze. Since air is assumed...
07 July 2018 7,440 6 View
I want to know, why gravity is discarded from the Navier-Stokes equations describing boundary-layer fluid flow. Even in the wedge-flow (Falkner-Skan flow) the parameter g=9.81 does not appear....
07 July 2018 2,930 33 View
Look at the image, extracted from the pdf-file attached here. Why 1/2 coefficient is much important and determines whether being tensor or not.
07 July 2018 6,234 12 View
Assume: du= f1(u,v).dx+f2(u,v).dy (1) dv= g1(u,v).dx+g2(u,v).dy (2) f1,f2, and, g1,g2 are continuous and known functions. We know further that implicitly h(u,v)=0 and hence we...
07 July 2018 6,466 10 View
I want to have insight over fluid-flow vector field, as I have an ordinary differential equation (ode): dv/du=-2(u2+v2)/(v2 - 5u2) where u and v are horizontal and vertical velocity components...
07 July 2018 3,506 6 View
I need an article with a literature survey on contributions over large-strain (finite-strains) or similar continuum topics.
05 May 2018 6,988 6 View
I have evidence that, too many global researchers belong to research secro-society. As they belong to this secret scientific community, they surreptitiously promote their colleague members and...
05 May 2018 6,046 17 View
I want to solve a mathematical algebraic equation. For example, T^2+exp(-T)+T^3+...=0. where T is a variable to be found. Moreover, I know T through another approach is near 5, T ≈ 5 (from...
04 April 2018 9,936 21 View
I am to numerically calculate the value of cost, for a certain optimal quadratic regulator. Cost in quadratic regulator is J=J(t)= int((x^2+u^2).dt, 0...inf). I have the numerical values of x and...
01 January 2018 1,952 2 View
F''(t)-(1/4/pi/T)*F0*F'(t)-(6/T^2)F(t)=0. If T approaches infinity then: Am I allowed to write the equation...
09 September 2017 756 37 View