割草机性能和降噪的工程仿真：VIKING GmbH 案例研究
技术
- 传感器 - 流量计
- 传感器 - 液位传感器
适用行业
- 设备与机械
适用功能
- 产品研发
用例
- 制造过程模拟
- 虚拟现实
关于客户
VIKING GmbH 是总部位于奥地利的 ANDREAS STIHL AG & Co. KG 的 100% 子公司。该公司是一家创新型、服务型的园艺设备制造商，产品包括割草机、草坪松土机、草坪拖拉机、花园碎纸机和耕耘机。在其割草机部门，该公司致力于通过不断提高割草性能并满足其产品的室外噪音排放法规来提供最舒适、最高效的工具。 VIKING GmbH 致力于创新和服务，不断寻求改进产品和满足客户需求的方法。
挑战
VIKING GmbH 是 ANDREAS STIHL AG & Co. KG 的子公司，是一家包括割草机在内的园艺设备制造商。该公司致力于不断提高割草机的性能，特别是在割草性能和噪音排放水平方面。然而，该公司在了解割草机甲板内的空气动力学方面面临挑战。割草机的弯曲双刃刀片会产生高度不稳定的气流，导致涡流周期性地撞击滑槽壁，影响噪音排放水平和捕捉性能。叶片的快速旋转、不稳定的压力以及甲板内气流速度的高波动产生了复杂的气流，使得传统的开发和测量方法几乎不可能实现。该公司需要找到一种方法来提高捕捉性能，同时满足室外噪音排放法规。
解决方案
为了克服这一挑战，VIKING 工程师决定使用 ANSYS CFX 流体流动仿真软件来模拟割草机甲板中的气流。目的是看看是否可以在设计过程中实施数值模拟。这需要通过实验测量来确认结果的准确性，并验证从计算流体动力学 (CFD) 提供的见解中可以获得的好处。工程师在 ANSYS CFX-Pre 中设置了墙、反向旋转墙和开口边界条件。然后，他们使用 ANSYS CFX 软件对瞬态转子定子模型进行 URANS 仿真，并在 ANSYS CFD-Post 中进行后处理。这种方法使他们能够将计算出的气流特征参数与割草机滑槽中的测量值进行比较。
运营影响
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