中文摘要：

为了改善消防水炮的水射流性能，提高其消防灭火效率，设计了一种新型固定式消防水炮，并对其流道能量损失及炮头水流出口速度进行了水力学理论计算。采用Fluent流场仿真软件对炮身内部流体流态进行了仿真分析，得到较好的炮身形状及结构；对消防水炮炮头喷嘴射流性能进行了仿真分析，比较了直流射流和喷雾射流这两种射流方式的效果；最后进行了初步的现场射流实验。仿真结果和实验测试表明：所设计的新型固定式消防水炮能满足实际消防作战使用要求，相关结论可为其它规格和类型的消防水炮设计提供参考依据。

英文摘要：

Fire water monitor is widely used to put out fire in the fire fighting. In order to improve water jet performances of a fire water monitor and to enhance its fire fighting efficiency, a new fixed fire water monitor was designed. The channel energy loss and outlet velocity of the fixed fire water monitor were calculated based on the engineering hydraulic theory. The channel flow pattern was simulated using the Computational Fluid Dynamics （CFD）, and the better structure channel of the monitor body was also obtained. Meanwhile, the jet influence of the monitor nozzle was simulated. The water jet performances of spray jet and direct jet were also compared. Finally, the field test was also carried out. The simulation results and the test results indicate that the fixed fire water monitor well meets the requirements of fire fighting, and the relevant results can provide some guidance to design other types of fire water monitor.