templates/rising_bubble/base/system/controlDict

FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      controlDict;
}

application     interFoam;

startFrom       startTime;
startTime       0;
stopAt          endTime;
endTime         3.0;            // 气泡上升物理时长 [s]（足够达到 terminal velocity）

deltaT          0.002;          // 初始时间步 [s]（高粘度，需更小时间步）
writeControl    adjustableRunTime;
writeInterval   0.12;           // endTime/25 → 25 帧

purgeWrite      0;
writeFormat     ascii;          // ASCII 格式，便于后处理脚本读取
writePrecision  8;
timeFormat      general;
timePrecision   6;

adjustTimeStep  yes;
maxCo           0.5;
maxAlphaCo      0.5;
maxDeltaT       0.002;

functions       {};