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The benchmark dataset
for the laminar boundary layer is the incompressible Blasius problem. This classic problem goes by several other names, including the *u*_{∞}= constant problem, the flat plate problem, the zero-pressure-gradient problem, or the Falkner-Skan m=0 problem. This dataset belongs to the class of problems called the external flow, implying the solution requires the free stream velocity distribution as a boundary condition.

Dataset Name - The Blasius problem is the benchmark dataset s10.dat.txt.

Problem Description - The benchmark laminar boundary layer flow is similar in form to CHMT problem 9.7 (for momentum transfer) and 10.16 (for heat transfer). The Blasius problem requires laminar flow over a flat plate (no surface curvature) with constant surface temperature and constant free stream velocity. The problem description includes:

- u
_{∞}= 15 m/s (the free stream velocity) - T
_{∞}= 300K (the free stream temperature) - T
_{s}= 295K (the surface temperature, constant) *fluid*:- air at 1 atm (101325 Pa)
- properties constant

note: this requires no body force or viscous dissipation effects

*geometry*:- planar
- dimensions: 0.2 m long in the flow direction by 1 m wide
- note: overall length compares to an x-Reynolds number ~ 2 x 10
^{5}for Pr=0.7 and Pr=1.0

*start condition*: laminar flow at an x-Reynolds number ~ 1000*end condition*: fluid remains laminar (matches a stop x-Reynolds number ~ 2 x 10^{5})

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