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1. What does "FG" mean?
"FG" Explanation: Flygame (a famous game manufacturer on campus) Purpose: to run homework on the front desk. Grammar: fg [JobID] Description: If job control is enabled (see "Job Control in Korn Shell" in the "AIX 5L V5.2 System User Guide: Operating Systems and Devices"), the fg command moves background jobs from the current environment to the foreground. Use the JobID parameter to indicate the specific job to be run in the foreground. If this parameter is not provided, the fg command uses the recently suspended job in the background or runs it as a background job. The JobID parameter can be the identification number of the process, or you can use the following symbol combination:% Number to reference the job by its job number. %String refers to a job whose name starts with a specific string. %? String refers to a job whose name contains a specific string. %+OR%% refers to the current job. %-Reference the previous assignment. Using the fg command to put a job in the foreground will result in the removal of the identifier of the job process from the list, which is known to the current shell environment. /The usr/bin/fg command does not work when operating in its own command execution environment because there are no suitable jobs available in this environment. For this reason, the fg command is executed as a regular built-in command in Korn or POSIX shells. The following exit values were returned in the exit state: 0 successfully completed. >0 error occurred. If job control is disabled, the fg command will exit with an error and no jobs will be placed in the foreground. Example: If the output of the job-l command shows the following job running in the background: [1]+16477RunningSleep
2. What parameters should be set for the velocity inlet conditions in Fluent
(1) Velocity value and direction, or velocity component.
(2) Rotational velocity in two-dimensional axisymmetric problems
(3) Temperature values used for energy calculation
(4) Discharge gauge pressure when using a coupled solver
(5) Turbulence parameters in turbulence calculations (6) Radiation parameters when using P-1 model, DTRM, DO model, or "face to face" model
(7) Chemical component mass concentration in component calculation
(8) Mixture concentration and increment in combustion calculations of non premixed or partially premixed models (9) Process variables in combustion calculations of premixed or partially premixed models (10) The boundary conditions of the dispersed phase in the calculation of the dispersed phase (11) Multiphase flow boundary conditions in multiphase flow calculations 1. Defining speed involves defining both the magnitude and direction of speed, as speed is a vector There are three ways to define velocity in FLUENT: the first is to consider velocity as the product of the absolute value of velocity and a unit direction vector, and then define velocity by defining the absolute value of velocity and the direction vector component; The second approach is to consider velocity as the vector sum of its components in three coordinate directions, and then define velocity by specifying the sizes of each of the three compon
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