Which of these schemes often result in unbounded solutions?(a) Central difference schemes.(b) First order schemes(c) QUICK scheme(d) High-resolution schemesThe question was posed to me during an online interview.Query is from Discretization Aspects topic in chapter Basic Aspects of Discretization, Grid Generation with Appropriate Transformation of Computational Fluid Dynamics

Which of these schemes often result in unbounded solutions?(a) Central

1.	Which of these schemes often result in unbounded solutions?(a) Central difference schemes.(b) First order schemes(c) QUICK scheme(d) High-resolution schemesThe question was posed to me during an online interview.Query is from Discretization Aspects topic in chapter Basic Aspects of Discretization, Grid Generation with Appropriate Transformation of Computational Fluid Dynamics
Answer» Right answer is (c) QUICK scheme Explanation: Higher ORDER SCHEMES result in unbounded solutions. This means that the solution is erroneous. This happens only when the GRID is so coarse. The problem of boundedness can be OVERCOME by refining the GRIDS. The QUICK scheme is a higher order scheme.

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