helical strake

简明释义

螺旋型箍条

英英释义

例句

1.The design of the wind turbine included a helical strake to reduce vortex shedding.

风力涡轮机的设计中包含了一个螺旋肋条以减少涡流脱落。

2.In aerospace applications, a helical strake can mitigate the effects of turbulence.

在航空航天应用中，螺旋肋条可以减轻湍流的影响。

3.The helical strake on the boat's hull improved its hydrodynamic performance.

船体上的螺旋肋条提高了其水动力性能。

4.The research focused on the effectiveness of a helical strake in reducing drag on aircraft wings.

研究集中在螺旋肋条在减少飞机机翼阻力方面的有效性。

5.Engineers often use a helical strake in pipelines to enhance flow stability.

工程师们常在管道中使用螺旋肋条来增强流动稳定性。

作文

In the field of engineering, particularly in the design of structures that interact with fluid dynamics, the concept of a helical strake is crucial. A helical strake refers to a helical-shaped fin or ridge that is typically added to cylindrical structures, such as chimneys, cooling towers, or offshore platforms. The primary purpose of incorporating a helical strake is to mitigate vortex-induced vibrations (VIV) that can lead to structural fatigue and eventual failure. These vibrations are caused by the flow of fluid around the structure, which creates alternating low-pressure zones that can resonate with the natural frequencies of the structure.The design of a helical strake involves careful consideration of its geometry, including the pitch, height, and width of the strake. By optimizing these parameters, engineers can effectively disrupt the formation of vortices, thereby reducing the amplitude of vibrations experienced by the structure. This is particularly important in tall and slender structures that are more susceptible to VIV. For example, in offshore oil rigs, the presence of a helical strake can significantly enhance the longevity and safety of the platform by preventing excessive oscillation under harsh marine conditions.Moreover, the implementation of helical strakes is not limited to large-scale structures. Even in smaller applications, such as pipelines and bridges, these features can play a vital role in maintaining structural integrity. Engineers often conduct extensive computational fluid dynamics simulations to predict the behavior of fluids around structures equipped with helical strakes. These simulations help in understanding how different designs will perform under various environmental conditions, leading to more informed design choices.The effectiveness of helical strakes has been validated through numerous studies and real-world applications. For instance, research conducted on wind turbine towers has shown that adding helical strakes can reduce the wind-induced vibrations that affect the stability and performance of the turbines. This not only improves the efficiency of energy production but also extends the operational life of the equipment.In summary, the helical strake is a vital component in modern engineering that addresses the challenges posed by fluid dynamics. Its ability to reduce vortex-induced vibrations makes it an essential feature in the design of various structures, from towering skyscrapers to offshore platforms. As technology continues to advance, the design and application of helical strakes will likely evolve, leading to even more innovative solutions for enhancing structural resilience against dynamic forces. Understanding the principles behind helical strakes not only enriches our knowledge of engineering mechanics but also underscores the importance of integrating aerodynamic considerations into structural design.

在工程领域，特别是在与流体动力学相互作用的结构设计中，螺旋肋条的概念至关重要。螺旋肋条指的是一种通常添加到圆柱形结构上的螺旋形鳍或脊，常见于烟囱、冷却塔或海上平台等结构。加入螺旋肋条的主要目的是减轻涡激振动（VIV），这种振动可能导致结构疲劳和最终的失效。这些振动是由于流体在结构周围流动造成的，形成交替的低压区，这可能与结构的自然频率共振。螺旋肋条的设计涉及对其几何形状的仔细考虑，包括肋条的螺距、高度和宽度。通过优化这些参数，工程师可以有效地干扰涡流的形成，从而减少结构所经历的振动幅度。这对于高而细长的结构尤为重要，因为它们更容易受到涡激振动的影响。例如，在海上石油平台中，螺旋肋条的存在可以显著增强平台的耐久性和安全性，防止在恶劣海洋条件下出现过度的振荡。此外，螺旋肋条的应用并不限于大型结构。在管道和桥梁等较小的应用中，这些特征也可以在维护结构完整性方面发挥重要作用。工程师通常会进行广泛的计算流体动力学模拟，以预测装备有螺旋肋条的结构周围流体的行为。这些模拟有助于理解不同设计在各种环境条件下的表现，从而做出更明智的设计选择。螺旋肋条的有效性已通过众多研究和实际应用得到了验证。例如，对风力涡轮机塔的研究表明，添加螺旋肋条可以减少影响涡轮稳定性和性能的风引起的振动。这不仅提高了能源生产的效率，还延长了设备的使用寿命。总之，螺旋肋条是现代工程中的一个重要组成部分，解决了流体动力学带来的挑战。它减少涡激振动的能力使其成为各种结构设计中的一个基本特征，从高耸的摩天大楼到海上平台。随着技术的不断进步，螺旋肋条的设计和应用可能会不断演变，带来更具创新性的解决方案，以增强结构抵御动态力量的韧性。理解螺旋肋条背后的原理不仅丰富了我们对工程力学的认识，还强调了在结构设计中整合空气动力学考虑的重要性。