LS Dyna

LS Dyna

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CESE CHEMISTRY

    • xingdeqian
      Subscriber

      When simulating a hydrogen explosion using CESE CHEMISTRY, I combined the two sections in the model into a single part (30% premixed hydrogen), and it ignited normally.

      However, when I set the inner section as a 30% premixed hydrogen part and the outer section as an air part, ignition failed and a shift in the ignition point occurred.

      Similarly, when I set both the inner and outer sections as separate 30% premixed hydrogen parts (two parts in total), ignition also failed and the ignition point shifted.

      How can this issue be resolved? Thank you.

      model

      ignited

      ignition failed

    • ErKo
      Ansys Employee

      Ansys employees are unable to provide an answer to this question. Please wait for feedback from other forum members who may be able to assist.

      Thank you,
      Erik

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