ASCHT2023 - Quiz&Prize Round 1

Which of the following belongs to the cubic equation of state?

• Ideal gas law

• Peng-Robinson EoS

• van der Waals EoS

• Perturbed chain SAFT EoS

Which of the following scenarios is/are valid for using the Boussinesq approximation?

• The Cooling of the alloy fluids

• The two-phase flow with big density contrast ( air bubbles rise in water )

• The reactive flow with violent heat releasing 

• The boiling heat transfer phenomenon  

Which of the following theories or equations is / are based on the continuum assumption ?

• Navier-stokes (NS) equation
  

• Darcy's Law
  

• Boltzmann equation

• Molecular Dynamics Theory

For the transport process of subsurface radioactive pollutants, their pollution mechanisms include:

• Advection

• Molecular diffusion

• Dispersion

• Radiation

Which of the following dimensionless numbers contains information about surface tension?  

• Reynolds number, Re

• Nunser number, Nu

• Weber number, We

• Knudsen number, Kn

Which of the following numerical methods is a mesh-based method?

• Smoothed-particle hydrodynamics (SPH)

• Finite element method (FEM)

• Finite volume method (FVM)

• Material point method (MPM)

Which of the following quantities is/are equilibrium property/properties instead of transport property/properties? 

• Interfacial tension

• Contact angle

• Solubility

• Density

What is the computational complexity of the Gauss elimination method?

• O(n)

• O(n^2)

• O(n^3)

• O(log n)

Which of the following algorithms can be used to solve the Navier-Stokes equations and simulate incompressible flows?

• Semi-Implicit Method for Pressure-Linked Equations (SIMPLE）

• Maker and Cell (MAC)

• Pressure-Implicit with Splitting of Operators (PISO)

• Fractional-step method (FS)

Which of the following statements is/are correct?

• The temperature in the inner core of the earth is about 5200 degree Celsius.

• The temperature in the inner core of the earth is about 9300 degree Celsius.

• The temperature at the very center of the Sun is about 15,000,000 degree Celsius.

• The temperature on the moon can reach 210 degree Celsius during lunar daytime at the moon's equator.