What is BS EN 14067-6- Requirements and test procedures for crosswind assessment about?
BS EN 14067 discusses aerodynamics for railway applications. BS EN 14067-6 is an international standard that provides requirements and test procedures for crosswind assessment in railway applications.
BS EN 14067-6 is the sixth part of a multi-part series that provides guidelines for the crosswind assessment of railways.
BS EN 14067-6 applies to all passenger vehicles, locomotives, and power cars (with a maximum train speed above 140 km/h up to 360 km/h) and freight wagons (with a maximum train speed above 80 km/h up to 160 km/h) and track gauges from 1 435 mm to 1 668 mm inclusive.
For passenger vehicles, locomotives, and power cars with a maximum train speed between 250 km/h and 360 km/h, a requirement to demonstrate crosswind stability is imposed.
Note: BS EN 14067-6 does not apply to light rail and urban rail vehicles.
Who is BS EN 14067-6- Requirements and test procedures for crosswind assessment for?
BS EN 14067-6 on Requirements and test procedures for crosswind assessment is useful for:
- Manufacturers of passenger railway vehicles, locomotives, power cars, and freight wagons
- Test centers for railways
- Engineers and developers of aerodynamics for railway application
- Regulatory authorities
Why should you use BS EN 14067-6- Requirements and test procedures for crosswind assessment?
Crosswind deflects the vehicle path in the direction of the wind. Trains running on open tracks are exposed to crosswinds. The crosswind safety of railway operations depends on vehicle and infrastructure characteristics and operational conditions
BS EN 14067-6 guideline assists you with computational fluid dynamics (CFD), reduced-scale wind tunnel measurements, determination of wheel unloading due to crosswinds, advanced quasi-static method, and time-dependent MBS method using a Chinese hat wind scenario for crosswind assessment.
BS EN 14067-6 provides plan profile, vertical profile, track design speed, walls, meteorological input data for line description, integrated line database, required minimum resolution/accuracy methods, and requirements to assess crosswind stability of vehicles.
BS EN 14067-6 also provides track design speed, walls, meteorological input data for line description, integrated line database, and required minimum resolution/accuracy for the method to acquire the needed railway line data and also provides methods to assess the wind exposure of a railway line.
Thus, BS EN 14067-6 assists in assessing the crosswind and aerodynamic lift forces for railways and encourages enhancing the designs for tracks, walls, for railways. In addition, also prevents any accidents that may occur due to wind forces.
What’s changed since the last update?
BS EN 14067-6:2018 supersedes EN 14067-6:2010, which has been withdrawn. The main changes compared to the previous edition are:
- Addition of the coordinate system and all relevant symbols in Part 1
- New requirements were added for passenger vehicles and locomotives running at 250 km/h ≤ Vmax ≤ 360 km/h
- New tables were added with reference CWCs for passenger vehicles and locomotives running at 250 km/h ≤ Vmax ≤ 360 km/h
- Formula (1) was corrected as well as the factor Fl in Table 3
- Guidance on the application of reference CWCs in crosswind risk assessments of railway lines is given in Clause 8