The PCBoom suite of tools was used to model atmospheric propagation cases and the optional focus case as part of the Third AIAA Sonic Boom Prediction Workshop. The Focused Boom module FOBoom version 7.1.0 was used to complete ray tracing calculations using computational fluid dynamics pressure data as the source. Lossy propagation was modeled using PCBoom’s interactive Burgers equation solver, PCBurg, and final results were obtained with the batch analysis tool HeadlessBurgers. The effects of sampling rate, time-step factor, and other factors on model results were investigated. Lateral cutoff angles were refined by finely incrementing azimuth angles and examining propagation paths and ground metrics. The optional focus case, in which the vehicle trajectory included acceleration, was also modeled using PCBoom. An interactive program (RayCau) was used to generate ray diagrams showing the caustic and the delta-tangent ray to confirm the focus condition and to facilitate identification of the ray and signature for input to the lossy nonlinear Tricomi equation (LNTE) solver. PCBurg was used to obtain the lossy signature at the delta tangent position. Finally, the LNTE module was used to compute signatures in the vicinity of the focal zone.

PCBoom 工具套件用于模拟大气传播案例和可选的焦点案例，作为第三届 AIAA 音爆预测研讨会的一部分。Focused Boom模块FOBoom 7.1.0版用于以计算流体动力学压力数据为源完成光线追踪计算。使用 PCBoom 的交互式 Burgers 方程求解器 PCBurg 对有损传播进行建模，并使用批量分析工具 HeadlessBurgers 获得最终结果。考察了采样率、时间步长等因素对模型结果的影响。通过精细地增加方位角并检查传播路径和地面指标来改进横向截止角。可选的焦点案例，其中车辆轨迹包括加速度，也使用 PCBoom 建模。交互式程序 (RayCau) 用于生成显示焦散线和 delta-tangent 射线的射线图，以确认聚焦条件并促进射线和签名的识别，以输入到有损非线性 Tricomi 方程 (LNTE) 求解器。PCBurg 用于在 delta 切线位置获得有损签名。最后，LNTE 模块用于计算焦区附近的特征。