How many characteristics pass through a point in the flow field if the Mach number is greater than 1?(a) 1(b) 2(c) 4(d) 0This question was posed to me in homework.I would like to ask this question from Two Dimensional Irrotational Flow in section Numerical Techniques for Steady Supersonic Flow of Aerodynamics

How many characteristics pass through a point in the flow field if the

1.	How many characteristics pass through a point in the flow field if the Mach number is greater than 1?(a) 1(b) 2(c) 4(d) 0This question was posed to me in homework.I would like to ask this question from Two Dimensional Irrotational Flow in section Numerical Techniques for Steady Supersonic Flow of Aerodynamics
Answer» Correct option is (b) 2 The best explanation: The characteristic curve is given by the relation \(\frac {DY}{dx_{char}} = \frac {- \frac {uv}{a^{2}} ± \SQRT {(\frac {u^2 + V^{2}}{a^{2}})-1}}{1 – \frac {u^{2}}{a^{2}}}\) The term inside the SQUARE ROOT \(\frac {u^2 + v^{2}}{a^{2}}\) – 1 can be written in the form of Mach number as follows: \(\frac {u^2 + v^{2}}{a^{2}}\) – 1 = \(\frac {V^{2}}{a^{2}}\) – 1 = M^2 – 1 When the flow is supersonic i.e. Mach number is greater than 1, two characteristics pass through a point in a flow field. Hyperbolic partial differential equation is used to define it.

Discussion

No Comment Found

Related InterviewSolutions

Which of these represents K+ constant along the C+ characteristic line?(a) θ + ν(M) = const(b) θ – ν(M) = const(c) θ + 2ν(M) = const(d) θ – 2ν(M) = constI have been asked this question in an internship interview.I would like to ask this question from Determination of Compatibility Equations in section Numerical Techniques for Steady Supersonic Flow of Aerodynamics
Method of characteristics is applicable for which of these flows?(a) Inviscid, subsonic flow(b) Steady, supersonic flow(c) Unsteady, subsonic flow(d) Unsteady supersonic flowThe question was asked in unit test.This interesting question is from Philosophy of Method of Characteristics in portion Numerical Techniques for Steady Supersonic Flow of Aerodynamics
If we know the value of θ1,ν1 at point 1 and θ2,ν2 in a flow, then what is the flow field condition at an internal point 3 lying at the intersection of characteristic lines passing from points 1 and 2?(a) θ3 = \(\frac {(K_- )_1 + (K_+ )_2}{2}\)(b) θ3 = \(\frac {(K_- )_1 + (K_+ )_3}{2}\)(c) θ3 = \(\frac {(K_+ )_1 + (K_+ )_2 + (K_+ )_3}{2}\)(d) θ3 = \(\frac {(K_- )_1 + (K_- )_2 + (K_- )_3}{2}\)I got this question by my school teacher while I was bunking the class.Enquiry is from Determination of Compatibility Equations topic in chapter Numerical Techniques for Steady Supersonic Flow of Aerodynamics
Characteristic curves passing through a point in a flow field are straight lines.(a) True(b) FalseThis question was addressed to me in examination.I'm obligated to ask this question of Two Dimensional Irrotational Flow topic in chapter Numerical Techniques for Steady Supersonic Flow of Aerodynamics
How many characteristic lines pass through the flow field in supersonic flow?(a) 1(b) 2(c) 0(d) 4The question was asked by my college director while I was bunking the class.I'd like to ask this question from Two Dimensional Irrotational Flow topic in division Numerical Techniques for Steady Supersonic Flow of Aerodynamics
The numerical solution results in certain amount of truncation error.(a) True(b) FalseI got this question by my school principal while I was bunking the class.This key question is from Philosophy of Method of Characteristics in section Numerical Techniques for Steady Supersonic Flow of Aerodynamics
What is the cause of truncation error in numerical solution?(a) Neglecting higher order terms(b) Rounding number to significant figure(c) Solving nonlinear equation(d) Incoherent boundary conditionsI have been asked this question by my school principal while I was bunking the class.Asked question is from Philosophy of Method of Characteristics topic in division Numerical Techniques for Steady Supersonic Flow of Aerodynamics
What is the value of derivative of flow field along characteristic line?(a) Zero(b) Indeterminate(c) One(d) 0.5The question was asked by my school principal while I was bunking the class.My question is taken from Two Dimensional Irrotational Flow topic in portion Numerical Techniques for Steady Supersonic Flow of Aerodynamics
K+ and K– constant along the characteristic lines related velocity to J+ and J– constants.(a) True(b) FalseThe question was asked by my college director while I was bunking the class.My doubt stems from Determination of Compatibility Equations topic in section Numerical Techniques for Steady Supersonic Flow of Aerodynamics
Which of these methods is employed to find solution using method of characteristics?(a) Taylor series(b) Fourier series(c) McLaurin series(d) Laurent seriesI have been asked this question during an online exam.The doubt is from Philosophy of Method of Characteristics in chapter Numerical Techniques for Steady Supersonic Flow of Aerodynamics

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment