1. A thermal-fluid-simulation analyzing apparatus comprising: a processor coupled to a memory, wherein the processor is programmed to analyze thermal fluid simulation by: generating an analysis model and dividing the analysis model into meshes using analysis conditions and conducting a first thermal fluid simulation analysis in a first region based on the generated analysis model, the analysis condition being a condition in a thermal fluid simulation analysis according to which an air conditioning state in a predetermined space is simulated; extracting an actual measured value as a boundary condition when an alarm is generated after the first thermal fluid simulation analysis, the boundary condition being an analysis condition that corresponds to a portion for which the alarm is generated; and selecting a region, different from the first region, corresponding to the boundary condition extracted in the extracting from regions in the meshes of the analysis model generated, updating the selected region with the boundary condition, and conducting a second thermal fluid simulation analysis using the analysis model and the meshes in which the selected region is updated.