Axial turbomachinery

An axial turbomachinery comprising:

• a blade that is disposed in a flow channel through which a main flow of a fluid flows and has a shroud at a distal end thereof;
• and
• a structural body that is provided via a gap on a distal side of the blade and is configured to rotate relative to the blade,
• wherein the structural body has a contraction flow member that protrudes toward the shroud to form a minute gap between the contraction flow member and the shroud,
• wherein the blade has an upstream inclined surface on an end surface of the shroud facing the upstream side, the upstream inclined surface being inclined from an upstream side to a downstream side toward a radially outer side,
• wherein the structural body is provided with an upstream inclined inner wall surface that is disposed on the upstream side of the shroud and is inclined from the upstream side toward the downstream side toward a radially outer side, at a position facing the shroud in a direction in which the main flow flows,
• wherein an inclination angle of the upstream inclined surface with respect to a central axis of relative rotation between the blade and the structural body is larger than an inclination angle of the upstream inclined inner wall surface with respect to the central axis, and
• wherein an end position of the upstream inclined surface on the radially inner side is located radially outside an end position of the upstream inclined inner wall surface on the radially inner side.